Merge pull request #101 from yoohahn/master

Fix for IE 10 align self and webkit justify-content
Version 3.0.0
Merge branch 'master' of github.com:csshat/lesshat

Conflicts:
	build/lesshat-prefixed.less
	build/lesshat.less
	mixins/align-self/align-self.js
	mixins/align-self/test.js
	mixins/justify-content/justify-content.js
Readme fix