fixed registerComponent
fixed registerComponent

Resolves https://github.com/shakacode/react_on_rails/issues/203

szyablitsky/react_on_rails,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,shakacode/react_on_rails