Update README
Added basic menu

Basic menu items added, help with instructions and version number.
Version number added as a field of the rlcgui class.
Fixed menu bar.

Sorted out the menu bar to be slightly better made. Using a panel rather
than alert box for instructions - better than it was, worse than it
should be.
Merge with upstream
Updated Instructions Window.
Merge pull request #1 from georgewhelan/master

Update README, added menu, about box and instructions