New: Integration with DataTables 1.10

- File name updated to be consistent with the other DataTables
  extensions
- CSS file provided - just one rule but it is common to fixedheader
  tables
- Examples updated to use the xml example scheme of 1.10
- Removed the ability to operate on a plain HTML table - this is
  specific a DataTables extension now
Dev: Correct file names for compression
License: MIT licensed now
New: AMD module support. FixedHeader is now registered as an named AMD
module under the name `datatables-fixedheader`
Examples: Update list order