Fix syntax in README
Fix syntax in README

shakacode/react_on_rails,szyablitsky/react_on_rails,shakacode/react_on_rails,szyablitsky/react_on_rails,shakacode/react_on_rails,shakacode/react_on_rails,szyablitsky/react_on_rails,shakacode/react_on_rails,szyablitsky/react_on_rails