EM-1: Add Jasmine Specs

Add Jasmine test directory structure and first specs for models (e.g. Address).

Add simple test for model fields.

Followed this tutorial for configuration Jasmine within the app and building out the specs. http://pivotallabs.com/sencha-touch-bdd-part-1/

This pull request does not include the config files necessary (i.e. Gemfile and Rakefile).