Suggest removing the minimum-stability flag

Silex can be installed with stable versions of the components.

README.md

@@ -29,9 +29,8 @@ composer](http://getcomposer.org). Just create a `composer.json` file and
 run the `php composer.phar install` command to install it:
 
     {
-        "minimum-stability": "dev",
         "require": {
-            "silex/silex": "1.0.*"
+            "silex/silex": "1.0.*@dev"
         }
     }
 

doc/usage.rst

@@ -25,7 +25,7 @@ If you want more flexibility, use Composer instead. Create a
 
     {
         "require": {
-            "silex/silex": "1.0.*"
+            "silex/silex": "1.0.*@dev"
         }
     }