"Once your happy with the changes" should be "Once you're happy with the changes"
"In the future I will look into adding support other CSS Frameworks" should be "In the future I will look into adding support for other CSS Frameworks" or "In the future I will look into supporting other CSS Frameworks"
"Let me know if you create anything your proud of" should be "Let me know if you create anything you're proud of"
(Grammatical nitpicking aside, this is a really neat tool!)