Fix a few more names in the README
Fix a few more names in the README

ruby/spec,nobu/rubyspec,eregon/rubyspec,sgarciac/spec,ruby/rubyspec,nobu/rubyspec,kachick/rubyspec,nobu/rubyspec,kachick/rubyspec,ruby/rubyspec,wied03/rubyspec,kachick/rubyspec,wied03/rubyspec,ruby/spec,eregon/rubyspec,wied03/rubyspec,sgarciac/spec,eregon/rubyspec,ruby/spec,sgarciac/spec