Fix twistedpair link.

Author: adamlwgriffiths

README.md

@@ -74,7 +74,7 @@ Development
 
 <img src="http://twistedpairdevelopment.files.wordpress.com/2010/10/twisted_pair-0086.png">
 
-PyGLy is developed by [Twisted Pair Development](twistedpairdevelopment.wordpress.com).
+PyGLy is developed by [Twisted Pair Development](http://twistedpairdevelopment.wordpress.com).
 
 Contributions are welcome.