fix: Output stream is empty when page completes.

http://kevinobee.wordpress.com/2013/04/13/cassette-bundling-with-sitecore-mvc/
Fix: MSBuild fails for 'bundle.SpriteImages()' calls
Merge remote-tracking branch 'origin/master' into dev/fixes
Merge branch 'dev/fixes' of git://github.com/cankoluman/cassette into cankoluman-dev/fixes