Add nx.AjaxModel tests
Add rest models source files and tests
Add rest models tests (WIP)
Update bower.json
Move string interpolation to utils (WIP)
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)
Implement nx.Collection::bind