Installation help

I am a newbie trying to rid my world of MSFT products…I have install
the 1.6.7 source files successfully…I am having a heck of a time
trying to install the RDE IDE on redhat 7.0…I can’t seem to find any
documentation telling me how to install this…I am sure it is only a
few commands…Can someone shed some light so I can get running with
Ruby…I am using RDE IDE version