Add tests for fixed remove functionality

Rebuild for 1.4.0

- Include assets and example page
- Make grunt build, build all versions
- Update Readme with gif examples
- Fix okcoker#6

- Programmatically add and remove tags.

- Added initial tests
- Restructured code

Add callback functions when tags are added/removed

Will add tests soon. Fix okcoker#2

Prevent holding down backspace key from deleting all tags quickly

Add support for IE8 and IE9

Fix tag adding issue in ff and opera

Also updated the autocomplete example