udpated odcs

README.rst

@@ -18,7 +18,7 @@ components`_:
 
     $app->run();
 
-Silex works with PHP 5.3.3 or later.
+Silex works with PHP 5.5.9 or later.
 
 Installation
 ------------

doc/changelog.rst

@@ -4,6 +4,7 @@ Changelog
 2.0.0 (2014-XX-XX)
 ------------------
 
+* bumped minimum version of PHP to 5.5.0
 * Updated Pimple to 3.0
 * Updated session listeners to extends HttpKernel ones
 * [BC BREAK] Locale management has been moved to LocaleServiceProvider which must be registered

doc/intro.rst

 Introduction
 ============
 
-Silex is a PHP microframework for PHP 5.3. It is built on the shoulders of
-`Symfony2`_ and `Pimple`_ and also inspired by `Sinatra`_.
+Silex is a PHP microframework. It is built on the shoulders of `Symfony2`_ and
+`Pimple`_ and also inspired by `Sinatra`_.
 
 A microframework provides the guts for building simple single-file apps. Silex
 aims to be: