Added bower package component file.
Updated correct css file name.
Merge branch 'master' of git://github.com/usablica/intro.js
Added support for CommonJS, RequireJS AMD and Browser Globals.
Replaced all double quotes to single quotes for better performance.
Replaced == to ===.
Merge branch 'master' of https://github.com/fizerkhan/intro.js into fizerkhan-master
A little changes + coding styles
Better coding style
Bug fix when current step in undefined