Merge pull request #5 from craigtp/master

Pull Request with a small bug fix to the table header sizing.
Fix haml example to properly show class as table-fixed-header
Merge pull request #6 from nyaruka/patch-1

Fix haml example to properly show class as table-fixed-header
Update table-fixed-header.js

Fixed an issue so the cloned header follows the original header if it is scrolled off screen.
Example of the horizontal scrolling issue and the solution.
Merge pull request #7 from zo103181/master

Horizontal Scroll Issue