New tests and simpler functionality

* Update mockjax to support jQuery 2.*
* Add jQuery 1.10.0, 2.0.0, and 2.0.1 to the test matrix
* Simplify the internal tryRequest function to use a simple finalizer
callback since we don't need a fullblown deferred object
Fix git version assertion
Merge pull request #6 from dcherman/test-new-jquery

New tests and simpler functionality