Issue 146 Ghostclick on android with dynamic content

Hi there, this is a patch for several issues that involve ghost clicks on android when content is created with dynamic javascript and bound to a different instance of fastclick.

It uses a configurable function that presents a shared variable to track the last click time, and simply stops any clicks too soon after the previous click.

This only accounts for tap timings, an easy change could be to track the coordinates as well.

I have found that you MUST have a FastClick bound to the document.body for this to be effective.