added documentation page and folder for stuff
Clean-up

* Some things respawned back in setupx86
* A .txt version of DataTables.js had been added (no difference to
actual code)
* Rename documentation HTML to remove space
Convert documentation to Markdown...

* ...for easy online reading.
* Also reference it in the README.
Fix markdown links

* Use relative link to documentation.md
* Fix intra-documentation.md link to keyboard shortcuts
Update

Added 'or' of object HTMLDocument to escape while loop
Update

'all' no longer supported in IE 11 (e.g., document.all...), fixed in
regular loop, still need to walk thru try/catch block
http://msdn.microsoft.com/en-us/library/ie/ms537434(v=vs.85).aspx