Merge pull request #38 from ConvertAPI/feature/python-2.7-readme

Remove python 2.7 from readme

Author: laurynas-convertapi

README.md

@@ -20,7 +20,7 @@ Install from source with:
 
 ### Requirements
 
-* Python 2.7+ or Python 3.3+
+* Python 3.3+
 
 ## Usage