update README.rst

-clarified some sentences.
-fixed some confusing nominalizations
-in "... provided by the community," it leaves me confused because there is no community mentioned beforehand.

README.rst

@@ -2,15 +2,15 @@ Flask
 =====
 
 Flask is a lightweight `WSGI`_ web application framework. It is designed
-to make getting started quick and easy, with the ability to scale up to
-complex applications. It began as a simple wrapper around `Werkzeug`_
+to hasten and ease the process of web application development, with the ability to scale up to
+complex applications. Flask began as a simple wrapper around `Werkzeug`_
 and `Jinja`_ and has become one of the most popular Python web
 application frameworks.
 
 Flask offers suggestions, but doesn't enforce any dependencies or
-project layout. It is up to the developer to choose the tools and
-libraries they want to use. There are many extensions provided by the
-community that make adding new functionality easy.
+project layout. Developers must choose the tools and
+libraries they want to use. 
+Many provided extensions exists to help easily add new functionalities.
 
 
 Installing