Update readme (update instructions)

README.markdown

@@ -84,10 +84,12 @@ ChangeLog
 Requirements
 ------------
 
-- Recent version of libxml2 >= 2.7.x (version 2.6.32 on Debian Lenny are not supported anymore)
+- Recent version of libxml2 >= 2.7.x (version 2.6.32 on Debian Lenny is not supported anymore)
 - PHP >= 5.3.7
 - PHP XML extensions (SimpleXML, DOM...)
 - PHP Sqlite extension
+- cURL extension for PHP or stream context with (`allow_url_fopen=On`)
+- Short tags enabled for PHP < 5.4
 
 Libraries used
 --------------
@@ -102,12 +104,44 @@ Libraries used
 Installation
 ------------
 
+From the archive:
+
 1. You must have a web server with PHP installed (version 5.3.7 minimum) with the Sqlite and XML extensions
 2. Download the source code and copy the directory `miniflux` where you want
 3. Check if the directory `data` is writeable (Miniflux stores everything inside a Sqlite database)
 4. With your browser go to <http://yourpersonalserver/miniflux>
 5. The default login and password is **admin/admin**
 6. Start to use the software
+7. Don't forget to change your password!
+
+From the repository:
+
+1. `git clone https://github.com/fguillot/miniflux.git`
+2. Go to third step just above
+
+Update
+------
+
+From the archive:
+
+1. Close your session (logout)
+2. Rename your actual miniflux directory (to keep a backup)
+3. Uncompress the new archive and copy your database file `db.sqlite` in the directory `data`
+4. Make the directory `data` writeable by the web server user
+5. Login and check if everything is ok
+6. Remove the old miniflux directory
+
+From the repository:
+
+1. Close your session (logout)
+2. `git pull`
+3. Login and check if everything is ok
+
+Security
+--------
+
+- Don't forget to change the default user/password
+- Don't allow everybody to access to the directory `data` from the URL. There is already a `.htaccess` for Apache but nothing for Nginx.
 
 FAQ
 ----