ivaynberg/select2 — pull request #1125 by rvignacio (2013-03-31 22:17:44+00:00)
Title: Extend $.fn.select2.ajaxDefaults into opts.ajax

Following #1083, if the user provides a $.fn.select2.ajaxDefaults object, it's properties are merged into opts.ajax to be used as defaults.
(To be sure, this time I tested it against the main page with all the examples...)