Update README.adoc
Update README.adoc

Versions of Python supported. Changed Travis URL to travis.com and for HelioGuilherme66 fork (because robotframework not working)
robotframework/RIDE,robotframework/RIDE,HelioGuilherme66/RIDE,HelioGuilherme66/RIDE,HelioGuilherme66/RIDE,robotframework/RIDE,robotframework/RIDE,HelioGuilherme66/RIDE