add version for module react-dom
add version for module react-dom

Summary:Add a missed var `version: ReactVersion ` for module `react-dom`.
react-dom in react is declared as :
```
  findDOMNode: findDOMNode,
  render: render,
  unmountComponentAtNode: ReactMount.unmountComponentAtNode,
  version: ReactVersion,
```
Closes https://github.com/facebook/flow/pull/1549

Differential Revision: D3070413

Pulled By: samwgoldman

fb-gh-sync-id: 18781036e3a10ec59ca632437183bbdf7a6bef1b
shipit-source-id: 18781036e3a10ec59ca632437183bbdf7a6bef1b

gabelevi/flow,jamesgpearce/flow,gabelevi/flow,facebook/flow,fletcherw/flow,chenglou/flow,jeffmo/flow,cesarandreu/flow,samwgoldman/flow,facebook/flow,facebook/flow,AgentME/flow,popham/flow,ylu1317/flow,AgentME/flow,d14b3l/flow,jgrund/flow,ylu1317/flow,chenglou/flow,mroch/flow,cesarandreu/flow,nmote/flow,d14b3l/flow,ForbesLindesay/flow,fletcherw/flow,popham/flow,gabro/flow,cesarandreu/flow,nmote/flow,AgentME/flow,facebook/flow,AprilArcus/flow,jamesgpearce/flow,jamesgpearce/flow,jgrund/flow,fletcherw/flow,ForbesLindesay/flow,d14b3l/flow,claudiopro/flow,facebook/flow,gabelevi/flow,AprilArcus/flow,chenglou/flow,ylu1317/flow,jgrund/flow,ForbesLindesay/flow,d14b3l/flow,d14b3l/flow,gabro/flow,popham/flow,nmote/flow,fletcherw/flow,fletcherw/flow,jeffmo/flow,fletcherw/flow,facebook/flow,JonathanUsername/flow,gabelevi/flow,AprilArcus/flow,claudiopro/flow,gabro/flow,samwgoldman/flow,jdelStrother/flow,jamesgpearce/flow,TiddoLangerak/flow,chenglou/flow,samwgoldman/flow,jdelStrother/flow,AgentME/flow,mroch/flow,jdelStrother/flow,TiddoLangerak/flow,MichaelDeBoey/flow,ForbesLindesay/flow,facebook/flow,MichaelDeBoey/flow,popham/flow,chenglou/flow,AprilArcus/flow,samwgoldman/flow,jgrund/flow,TiddoLangerak/flow,mroch/flow,jamesgpearce/flow,MichaelDeBoey/flow,JonathanUsername/flow,mroch/flow,JonathanUsername/flow,JonathanUsername/flow,popham/flow,jdelStrother/flow,ForbesLindesay/flow,samwgoldman/flow,jeffmo/flow,JonathanUsername/flow,claudiopro/flow,jdelStrother/flow,JonathanUsername/flow,gabro/flow,ylu1317/flow,gabro/flow,samwgoldman/flow,MichaelDeBoey/flow,AprilArcus/flow,MichaelDeBoey/flow,jgrund/flow,AprilArcus/flow,gabelevi/flow,chenglou/flow,ForbesLindesay/flow,d14b3l/flow,gabelevi/flow,claudiopro/flow,samwgoldman/flow,TiddoLangerak/flow,gabro/flow,AgentME/flow,nmote/flow,nmote/flow,jeffmo/flow,mroch/flow,nmote/flow,gabelevi/flow,jdelStrother/flow,nmote/flow,mroch/flow,jamesgpearce/flow,ylu1317/flow,TiddoLangerak/flow,popham/flow,cesarandreu/flow,JonathanUsername/flow,jeffmo/flow,jamesgpearce/flow,claudiopro/flow,popham/flow,mroch/flow,jgrund/flow,jeffmo/flow