Add scope argument to startup and shutdown methods, close #3
Don't attempt to iterate undefined
Re-factor load/unload all element components into core, add getElements() method to API
Implement reload() method, closes #2
Update Grunt JSHint and Uglify and ensure compliance
Simplify prune core method and add spec
Add API methods to readme, improve some internal naming
Merge pull request #4 from i-like-robots/release/0.2.0

Release/0.2.0