Update README.
Merge remote-tracking branch 'origin/master'
Update README.
Fix wrong URL to demo page in README.
Remove custom classes to make it more SUI
Fix buttons size a bit
Rename buttons inner HTML to suit with own class
Merge pull request #2 from azerozvn/theme

Theme
Merge remote-tracking branch 'origin/master'
Merge branch 'master' into gh-pages