fixes dropdown bug #256
builds and version uptick
Fixed '404 not found' link path in CONTRIBUTING.md file
Merge pull request #258 from qichunren/master

Fixed '404 not found' link path in CONTRIBUTING.md file
Merge branch 'master' of github.com:jlukic/Semantic-UI into popup

Conflicts:
	RELEASE NOTES.md
	build/packaged/css/semantic.min.css
	build/packaged/javascript/semantic.min.js
	rtl/packaged/css/semantic.min.css
	rtl/packaged/javascript/semantic.min.js