Editing rttlua/rfsm code with Emacs

Hi Emacs Users,

I'm finding Emacs flymake _extremly_ useful when editing rFSM and
rttlua code, so I added some basic instructions on how to set it up
(it's very simple) here:

http://www.orocos.org/wiki/orocos/toolchain/HowtoUseFlyMakeLua

Enjoy
Markus