merged branch igorw/readme-composer (PR #390)

Commits
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33061c8f Recommend composer in README

Discussion
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Recommend composer in README

Side note: Please update http://silex.sensiolabs.org/download to use 1.0.* instead of dev-master.

README.md

@@ -24,8 +24,17 @@ Silex works with PHP 5.3.3 or later.
 
 ## Installation
 
-Installing Silex is as easy as it can get. Download the [`silex.zip`][2] file,
-extract it, and you're done!
+The recommended way to install Silex is [through
+composer](http://getcomposer.org). Just create a `composer.json` file and
+run the `php composer.phar install` command to install it:
+
+    {
+        "require": {
+            "silex/silex": "1.0.*"
+        }
+    }
+
+Alternatively, you can download the [`silex.zip`][2] file and extract it.
 
 ## More Information