Remove reference to window.jQuery to fix AMD no conflict loading style
Icon for optgroup label misses iconBase

Added `that.options.iconBase` to the `labelIcon`.
Update README.md

Add syntax highlighting.
Merge pull request #652 from althaus/patch-2

Icon for optgroup label misses iconBase
site generated
rm _site
Merge pull request #656 from DavidePastore/patch-2

Update README.md
Merge pull request #648 from thomaswelton/647-fix-no-conflict

Use jQuery rather than window.jQuery. Fixes #647
Merge pull request #646 from jkrehm/feature/mobile-option

Made "mobile" a boolean option when instantiating the selectpicker