`live()` to `on()`

Updated the v1.4.1 changelog.

Added a demo and readme to the repository.

Fixed a regression bug that causes 'expiresIn' to stop working.

* Removed 'allowMultiple' option as tracking multiple instances of th…

…e dialogues is not a good idea (the code was broken anyway).

* Added the original action object as an argument to the callback functions.
* Fixed a bug where original actions would disappear.

Added 'hideOriginalAction' option.

Added 'allowMultiple' option.

Initial commit.