Update raygun.js
Update raygun.js

Added an option to ignore ajax abort calls
This can be set in the init call using:
rayGun.init(raygunKey,{ignoreAjaxAbort:true})

with help from http://ilikestuffblog.com/2009/11/30/how-to-distinguish-a-user-aborted-ajax-call-from-an-error/
szepeviktor/raygun4js,paulcbetts/raygun4js,szepeviktor/raygun4js