Few edits in top-level README
Few edits in top-level README

bparees/sti-ruby,hhorak/sti-ruby,sclorg/s2i-ruby-container,openshift/sti-ruby,sclorg/s2i-ruby-container,sclorg/s2i-ruby-container,openshift/sti-ruby,hhorak/sti-ruby,bparees/sti-ruby