jquery/api.jquery.com — pull request #547 by wyattanderson (2014-08-07 16:19:21+00:00)
Title: Document behavior of adding a false contentType to jQuery.ajax

In [jQuery bug 7881](http://bugs.jquery.com/ticket/7881), a change was made to disable setting of a `Content-Type` header by passing `false` as a value for the `contentType` option to `$.ajax`. This updates the documentation to reflect that behavior.