Merge pull request #17 from antoniojunyor/master

Adjusting stylesheet of boxList header.
adding therubyracer gem to avoid errors
updating select2 plugin
adding image needed for the new select2 plugin
Merge pull request #19 from renatocn/master

Update select2 plugin
Adjusting changelog version ‘1.2.31’.
Adding on documentation simpleBox with icons.
Creating changelog version ‘1.2.32’.
Creating changelog version ‘1.2.30’.