Update Readme.md to remove the old update
Update Readme.md to remove the old update

Remove the old update that says that rails 5 is still WIP
autolab/Autolab,cg2v/Autolab,cg2v/Autolab,autolab/Autolab,autolab/Autolab,cg2v/Autolab,cg2v/Autolab,autolab/Autolab,autolab/Autolab,autolab/Autolab,cg2v/Autolab,cg2v/Autolab