Support for mobile devices

[Surfoo]

No description provided.

[joequery]

Thanks for the pull request. Did the tests pass with your adjustments? And what mobile device was the plugin failing on before?

[Surfoo]

Oh sorry, I didn't execute the tests...

I have a Nexus 5 with Lollipop and I just tried with Chrome.
Maybe you will need to test with more devices, I don't know and I have only this smartphone.

[joequery]

Hey there,

So I'm finally getting around to merging this in, and the code is actually incorrect.

$(this) within the callback function provided to all refers to the th we want sorted. If you take $(this) out of the callback context, it refers to the entire table instead of the th.

I will incorporate your first commit though :)

[joequery]

It seems that touchend and click are not mutually exclusive events. Consequently, devices that support both will have a 'doubleclick' effect. Not quite sure what to do about this, there doesn't seem to be a 100% accurate solution based upon my research.