Add event to enter function

[taktran]

Updated enter function so that caller event is passed along from hover, focus and click eg,

$("#selector").tipTip({
  delay: 25,
  enter: function(event) {
    var selectedElem = event.target;
    // ...
  }
});

[rkgarg]

Nice... This should be merged...

[danimesq]

Hi, @taktran
I've forked TipTip to maintain it and use in all web projects of my community.
Please clone your pull request to: https://github.com/Software-js/TipTip
Thanks!

[taktran]

Cheers @DaniellMesquita

Not using it atm, but hope it's useful for others =)