Support for React 0.14.x

Big rewrite to support 0.14 and previous version (at least back to 0.12.x)

• Modify elements that have onClick props with additional event props
• Decrease chance of memory leaks
• Fixes #13 (removing, hiding and moving elements still triggering click events)
• Click events only triggered if touch released on same element
• Allow standard onClick events to happen (allowing checkboxes, labels, inputs, focusing, etc to function)
• Handle special cases for inputs etc be focussed / accessed quickly
• Remove need for timeouts
• Handle React.DOM.x element creation
• Support 0.14+ (fixes #14)
• Support older versions of React (theoretically - not tested)

New features (mentioned in / fixes #4)

• Added event.button = 0
• Changed event.type to click
• Added event.fastclick = true
• Copy touch positions to event