Use $el when available
Refactor collection tests
Move a few collection helper tests
Do not rerender model by default
shouldRender helper
Defer collection rendering
Merge branch 'master' into defered-render

Conflicts:
	test/src/collection.js
Fix unit tests
Add default comments
Update docs on new view APIs
Merge pull request #155 from walmartlabs/defered-render

Defered render