Minor bug and testing updates

This is a very minor release but may solve issues with people installing from npm or using jsonp. Additionally, the testing libraries for jQuery were updated to the latest stable in each of the 1.x and 2.x branches.

NOTE: Only limited support for the 1.x branch of Mockjax will continue. All new features and anything beyond critical bug fixes will occur in the v2 branch, which will shortly become master!