changed name due to existing gem

Author: Ben Slaughter

README.md

@@ -5,6 +5,6 @@ to_bool
 [![Build Status](https://travis-ci.org/benSlaughter/to_bool.png?branch=master)](https://travis-ci.org/benSlaughter/to_bool)
 [![Dependency Status](https://gemnasium.com/benSlaughter/to_bool.png)](https://gemnasium.com/benSlaughter/to_bool)
 [![Coverage Status](https://coveralls.io/repos/benSlaughter/to_bool/badge.png)](https://coveralls.io/r/benSlaughter/to_bool)
-[![Gem Version](https://badge.fury.io/rb/to_bool.png)](http://badge.fury.io/rb/to_bool)
+[![Gem Version](https://badge.fury.io/rb/to_b.png)](http://badge.fury.io/rb/to_b)
 
 Extends classes to include the to_b method