diff --git a/vendor/PicoFeed/Filter.php b/vendor/PicoFeed/Filter.php
index dd6f526..99ce254 100644
--- a/vendor/PicoFeed/Filter.php
+++ b/vendor/PicoFeed/Filter.php
@@ -257,8 +257,25 @@ class Filter
 
     public function getAbsoluteUrl($path, $url)
     {
+        //if (! filter_var($url, FILTER_VALIDATE_URL)) return '';
+
         $components = parse_url($url);
 
+        if (! isset($components['scheme'])) $components['scheme'] = 'http';
+
+        if (! isset($components['host'])) {
+
+            if ($url) {
+
+                $components['host'] = $url;
+                $components['path'] = '/';
+            }
+            else {
+
+                return '';
+            }
+        }
+
         if ($path{0} === '/') {
 
             // Absolute path
@@ -267,9 +284,10 @@ class Filter
         else {
 
             // Relative path
-            $url_path = $components['path'];
+            $url_path = isset($components['path']) && ! empty($components['path']) ? $components['path'] : '/';
+            $length = strlen($url_path);
 
-            if ($url_path{strlen($url_path) - 1} !== '/') {
+            if ($length > 1 && $url_path{$length - 1} !== '/') {
 
                 $url_path = dirname($url_path).'/';
             }
diff --git a/vendor/PicoFeed/Parsers/Atom.php b/vendor/PicoFeed/Parsers/Atom.php
index ab5b805..05cefda 100644
--- a/vendor/PicoFeed/Parsers/Atom.php
+++ b/vendor/PicoFeed/Parsers/Atom.php
@@ -1,8 +1,8 @@
 <?php
 
-namespace PicoFeed;
+namespace PicoFeed\Parsers;
 
-class Atom extends Parser
+class Atom extends \PicoFeed\Parser
 {
     public function execute()
     {
diff --git a/vendor/PicoFeed/Parsers/Rss10.php b/vendor/PicoFeed/Parsers/Rss10.php
index 9d126fc..6b9ef9c 100644
--- a/vendor/PicoFeed/Parsers/Rss10.php
+++ b/vendor/PicoFeed/Parsers/Rss10.php
@@ -1,8 +1,8 @@
 <?php
 
-namespace PicoFeed;
+namespace PicoFeed\Parsers;
 
-class Rss10 extends Parser
+class Rss10 extends \PicoFeed\Parser
 {
     public function execute()
     {
diff --git a/vendor/PicoFeed/Parsers/Rss20.php b/vendor/PicoFeed/Parsers/Rss20.php
index 7437366..88a2851 100644
--- a/vendor/PicoFeed/Parsers/Rss20.php
+++ b/vendor/PicoFeed/Parsers/Rss20.php
@@ -1,8 +1,8 @@
 <?php
 
-namespace PicoFeed;
+namespace PicoFeed\Parsers;
 
-class Rss20 extends Parser
+class Rss20 extends \PicoFeed\Parser
 {
     public function execute()
     {
diff --git a/vendor/PicoFeed/Parsers/Rss91.php b/vendor/PicoFeed/Parsers/Rss91.php
index 08716e9..abedf85 100644
--- a/vendor/PicoFeed/Parsers/Rss91.php
+++ b/vendor/PicoFeed/Parsers/Rss91.php
@@ -1,6 +1,6 @@
 <?php
 
-namespace PicoFeed;
+namespace PicoFeed\Parsers;
 
 require_once __DIR__.'/Rss20.php';
 
diff --git a/vendor/PicoFeed/Parsers/Rss92.php b/vendor/PicoFeed/Parsers/Rss92.php
index 4dec591..6fd6e15 100644
--- a/vendor/PicoFeed/Parsers/Rss92.php
+++ b/vendor/PicoFeed/Parsers/Rss92.php
@@ -1,6 +1,6 @@
 <?php
 
-namespace PicoFeed;
+namespace PicoFeed\Parsers;
 
 require_once __DIR__.'/Rss20.php';
 
diff --git a/vendor/PicoFeed/Reader.php b/vendor/PicoFeed/Reader.php
index af5a7d9..efa2a2a 100644
--- a/vendor/PicoFeed/Reader.php
+++ b/vendor/PicoFeed/Reader.php
@@ -84,30 +84,30 @@ class Reader
         if (strpos($first_tag, '<feed') !== false) {
 
             require_once __DIR__.'/Parsers/Atom.php';
-            return new Atom($this->content);
+            return new Parsers\Atom($this->content);
         }
         else if (strpos($first_tag, '<rss') !== false &&
                 (strpos($first_tag, 'version="2.0"') !== false || strpos($first_tag, 'version=\'2.0\'') !== false)) {
 
             require_once __DIR__.'/Parsers/Rss20.php';
-            return new Rss20($this->content);
+            return new Parsers\Rss20($this->content);
         }
         else if (strpos($first_tag, '<rss') !== false &&
                 (strpos($first_tag, 'version="0.92"') !== false || strpos($first_tag, 'version=\'0.92\'') !== false)) {
 
             require_once __DIR__.'/Parsers/Rss92.php';
-            return new Rss92($this->content);
+            return new Parsers\Rss92($this->content);
         }
         else if (strpos($first_tag, '<rss') !== false &&
                 (strpos($first_tag, 'version="0.91"') !== false || strpos($first_tag, 'version=\'0.91\'') !== false)) {
 
             require_once __DIR__.'/Parsers/Rss91.php';
-            return new Rss91($this->content);
+            return new Parsers\Rss91($this->content);
         }
         else if (strpos($first_tag, '<rdf:') !== false && strpos($first_tag, 'xmlns="http://purl.org/rss/1.0/"') !== false) {
 
             require_once __DIR__.'/Parsers/Rss10.php';
-            return new Rss10($this->content);
+            return new Parsers\Rss10($this->content);
         }
         else if ($discover === true) {
 
@@ -149,18 +149,21 @@ class Reader
 
                 $link = $nodes->item(0)->getAttribute('href');
 
-                // Relative links
-                if (strpos($link, 'http') !== 0) {
+                if (! empty($link)) {
 
-                    if ($link{0} === '/') $link = substr($link, 1);
-                    if ($this->url{strlen($this->url) - 1} !== '/') $this->url .= '/';
+                    // Relative links
+                    if (strpos($link, 'http') !== 0) {
 
-                    $link = $this->url.$link;
+                        if ($link{0} === '/') $link = substr($link, 1);
+                        if ($this->url{strlen($this->url) - 1} !== '/') $this->url .= '/';
+
+                        $link = $this->url.$link;
+                    }
+
+                    $this->download($link);
+
+                    return true;
                 }
-
-                $this->download($link);
-
-                return true;
             }
         }
 
diff --git a/vendor/PicoFeed/Writer.php b/vendor/PicoFeed/Writer.php
index e69de29..c9fc8e4 100644
--- a/vendor/PicoFeed/Writer.php
+++ b/vendor/PicoFeed/Writer.php
@@ -0,0 +1,21 @@
+<?php
+
+namespace PicoFeed;
+
+abstract class Writer
+{
+    public $items = array();
+
+    abstract public function execute($filename = '');
+
+    public function checkRequiredProperties()
+    {
+        foreach ($this->required_properties as $property) {
+
+            if (! isset($this->$property)) {
+
+                throw new \RuntimeException('Required property missing: '.$property);
+            }
+        }
+    }
+}
\ No newline at end of file
diff --git a/vendor/PicoFeed/Writers/Atom.php b/vendor/PicoFeed/Writers/Atom.php
new file mode 100644
index 0000000..084b4f6
--- /dev/null
+++ b/vendor/PicoFeed/Writers/Atom.php
@@ -0,0 +1,121 @@
+<?php
+
+namespace PicoFeed\Writers;
+
+require_once __DIR__.'/../Writer.php';
+
+class Atom extends \PicoFeed\Writer
+{
+    protected $required_properties = array(
+        'title',
+        'site_url',
+        'feed_url'
+    );
+
+
+    public function execute($filename = '')
+    {
+        $this->checkRequiredProperties();
+
+        $dom = new \DomDocument('1.0', 'UTF-8');
+        $dom->formatOutput = true;
+
+        // <feed/>
+        $feed = $dom->createElement('feed');
+        $feed->setAttributeNodeNS(new \DomAttr('xmlns', 'http://www.w3.org/2005/Atom'));
+
+        // <generator/>
+        $generator = $dom->createElement('generator', 'PicoFeed');
+        $generator->setAttribute('url', 'https://github.com/fguillot/picoFeed');
+        $feed->appendChild($generator);
+
+        // <title/>
+        $feed->appendChild($dom->createElement('title', $this->title));
+
+        // <updated/>
+        $feed->appendChild($dom->createElement('updated', date(DATE_ATOM, isset($this->updated) ? $this->updated : time())));
+
+        // <link rel="alternate" type="text/html" href="http://example.org/"/>
+        $link = $dom->createElement('link');
+        $link->setAttribute('rel', 'alternate');
+        $link->setAttribute('type', 'text/html');
+        $link->setAttribute('href', $this->site_url);
+        $feed->appendChild($link);
+
+        // <link rel="self" type="application/atom+xml" href="http://example.org/feed.atom"/>
+        $link = $dom->createElement('link');
+        $link->setAttribute('rel', 'self');
+        $link->setAttribute('type', 'application/atom+xml');
+        $link->setAttribute('href', $this->feed_url);
+        $feed->appendChild($link);
+
+        // <author/>
+        if (isset($this->author)) {
+
+            $name = $dom->createElement('name', $this->author);
+
+            $author = $dom->createElement('author');
+            $author->appendChild($name);
+            $feed->appendChild($author);
+        }
+
+        // <entry/>
+        foreach ($this->items as $item) {
+
+            $entry = $dom->createElement('entry');
+
+            // <title/>
+            $entry->appendChild($dom->createElement('title', $item['title']));
+
+            // <updated/>
+            $entry->appendChild($dom->createElement('updated', date(DATE_ATOM, isset($item['updated']) ? $item['updated'] : time())));
+
+            // <published/>
+            if (isset($item['published'])) {
+                $entry->appendChild($dom->createElement('published', date(DATE_ATOM, $item['published'])));
+            }
+
+            // <link rel="alternate" type="text/html" href="http://example.org/"/>
+            $link = $dom->createElement('link');
+            $link->setAttribute('rel', 'alternate');
+            $link->setAttribute('type', 'text/html');
+            $link->setAttribute('href', $item['url']);
+            $entry->appendChild($link);
+
+            // <summary/>
+            if (isset($item['summary'])) {
+                $entry->appendChild($dom->createElement('summary', $item['summary']));
+            }
+
+            // <content/>
+            if (isset($item['content'])) {
+                $content = $dom->createElement('content');
+                $content->setAttribute('type', 'html');
+                $content->appendChild($dom->createCDATASection($item['content']));
+                $entry->appendChild($content);
+            }
+
+            // <author/>
+            if (isset($item['author'])) {
+
+                $name = $dom->createElement('name', $item['author']);
+
+                $author = $dom->createElement('author');
+                $author->appendChild($name);
+
+                $entry->appendChild($author);
+            }
+
+            $feed->appendChild($entry);
+        }
+
+        $dom->appendChild($feed);
+
+        if ($filename) {
+            $dom->save($filename);
+        }
+        else {
+            return $dom->saveXML();
+        }
+    }
+}
\ No newline at end of file