Demo fix

Fixed a bug on the demo that resulted in the social security number fields to not having the correct filter.
Merge pull request #7 from Mathachew/dev

1.3 Update
Merge pull request #8 from Mathachew/dev

Update README.md
Pasting support has been improved from basic to intelligent

Improved support for keypress events of special keys in Firefox
Fixes an issue with pressing the del key in Firefox
Fixed some bad examples in the demo (bah!)
Fixed several instances of bad boolean evaluations from occurring