Add support for jQuery with .noConflict() mode

[lamberski]

When using jQuery with .noConflict() mode, jquery-modal throws error:

Cannot read property 'fn' of undefined

It can be easily fixed by replacing })(); with })(jQuery); and adding it as an argument on the begining of script - (function($) {. This way, even if jQuery was detatched from $ variable, plugin will work.

[kylefox]

Nice catch, should be fixed now. Thanks!