Adds support for visualization of undefinied values.
Adds angualr-animate dependency
Implements fade in animation for scopes
Merges M&J's changes
Merge branch 'master' of https://github.com/js-visualizer/js-visualizer

Conflicts:
	public/scripts/app.js
Removed bower components from source control
Fixes variable updating
Merge pull request #29 from chughes87/master

Fixes upating variables