Fixed bug with IE and event.preventDefault()
Removed unnecessary boolean conversion
Code tidy
Fixed issues with both swipe and pinch at the same time.  Added new local demos (no need to run on web server any more), added documentation generated from the source, updated the readme and demo index page.
Merged code tidy from @jakobloekke into latest version, added more comments
Added triggerOnTouchLeave property that will trigger the end event when the user leaves the element.  If thesholds are set, and they are not met, then cancel is triggered.