Fix multiple overlay DOM

Now we can have multiple slideReveals with overlay in the same page without overlaying on top of one another

v1.1.1

Scope event to `.slideReveal` name space

Refactor: wrap interface into SlideReveal object

Refactor

Version is bumped to v1.1 because changes in the main code from the refactor. Now internal interface is wrapped into SlideReveal class which can be accessed as:

$(slideReveal).data('slide-reveal-model')`

Features added

• width option can be 100, '100px', '50%'
• add toggle method option

$(el).slideReveal('toggle');

Minor bug fixing

Fix undefined error when no padding specified. (49c6249)

Add overlay option

Add the overlay option with default true. So by default the page will be blocked when slideReveal is opened.

$('element').slideReveal({
  overlay: true // false
});