New and improved TypeWatch plugin.

Breaking changes: YES

* Code has been refactored thanks to Charles Christolini - BinaryPie.com
* Supports chaining
* Supports jQuery in No Conflict mode
* New option: captureLength

Options:

wait : (default: 750) : Milliseconds to wait before firing event,

callback : (default: function() { }) : Function to call when wait time has elapsed,

highlight : (default: true) : Highlights the text of the input element when it gets focus,

captureEnter : (REMOVED) : TypeWatch now always captures the enter key on single-line input elements,

captureLength : (default: 2) : The minimum length of text required to fire the event.