Updates test helpers
Merge branch 'master' of github.com:Semantic-Org/Semantic-UI

Conflicts:
	test/helpers/jasmine-sinon.js
Fixes z-index on hidden content in reveal. Fixes #769
Trying to make karma happy
Update README.md
Fixes #774, adds spacing to message close icon, fixes z-index
Merge branch 'master' of github.com:Semantic-Org/Semantic-UI
Fixes #764 issue with hidden message sometimes not hiding
Fixes #770: Disabled checkboxes will not allow selection
Fixes #763, icon message does not set all transition classes correctly
Testing travis CI fix
Builds version 0.15.5
Trying to fix travis still
Fixes #716. Stackable items now take 100% width
checkout last version