Add nx.AjaxModel tests
Add watch grunt task

Conflicts:
	test.html
Add rest models source files and tests
Add rest models tests (WIP)
Update bower.json
Move string interpolation to utils (WIP)
Add input template demo
Update nx.RestCollection spec (WIP)
Add tests for nx.RestCollection
Implement Utils.interpolateString
Fix string interpolation for strings with no placeholders
Update Bower dependencies
Implement nx.AjaxModel
Implement nx.RestDocument (WIP)
Fix nx.RestDocument spec
Implement nx.RestCollection (WIP)
Apply final touches to rest models draft
Add datepicker demo files
Port datepicker view
Add datepicker demo application files