fix broken link in readme
fix broken link in readme

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