maccman/abba — pull request #10 by typpo (2013-03-26 23:59:26+00:00)
Title: Add callback to .complete()

Add a callback to Abba.complete() that fires when tracking image has loaded.

Use case: you want to record a completion when user clicks something. In many cases (eg. signup or purchase button) this links to a different page, but you don't want to navigate away until the completion was recorded.