remove some trailing spaces and add coverage badge to README

README.md

@@ -1,4 +1,4 @@
-# Semantic [![Build Status](https://travis-ci.org/Semantic-Org/Semantic-UI.png)](https://travis-ci.org/Semantic-Org/Semantic-UI) 
+# Semantic [![Build Status](https://travis-ci.org/Semantic-Org/Semantic-UI.png)](https://travis-ci.org/Semantic-Org/Semantic-UI) [![Coverage Status](https://coveralls.io/repos/optikfluffel/Semantic-UI/badge.png?branch=coveralls-integration)](https://coveralls.io/r/optikfluffel/Semantic-UI?branch=coveralls-integration)
 Semantic is a UI Component library implemented using a set of specifications designed around natural language
 
 Semantic UI is under constant development, so **be sure to check out our [release notes](https://github.com/Semantic-Org/Semantic-UI/blob/master/RELEASE%20NOTES.md) for recent changes**.