Initial work on $.ajax
Added failure handling and POST requests to $.ajax
Added jQuery.Deferred instead of extracted Deferred
Rerun tests on vendor/*.js changes
Added Deferred test cases
Added support for 'accepts' setting
Added support for async setting on $.ajax
Fixed jQuery.isPlainObject
Added beforeSend setting

Also changed response handling to more closely reflect the jQuery ajax
response handling (supporting multiple converters, etc.).
Added cache support to $.ajax
Added complete handler and change other handlers

Updated success and fail handlers to more closely match jQuery's
handlers.
Added test for $.ajax 'custom' setting
Removed xhr.getRequestHeader as incompatible with Ti.Network.HTTPClient
Added $.ajax contentType setting
Added $.ajax  setting
Updated name of accepts tests to reflect inclusion of converters tests
Added test for merge of converters setting
Added jQuery.params
Added $.ajax  and  settings
Added jQuery copyright header