Merge pull request #7 from afeld/patch-1

only scan files with a .css extension

Author: brynary

lib/cc/engine/csslint.rb

@@ -55,7 +55,7 @@ def csslint_xml
       end
 
       def files
-        Dir.glob("**/*css")
+        Dir.glob("**/*.css")
       end
     end
   end