Allow to get action result

[vslinko]

I want to wait for an async action before React.renterToString on server. Example

function fetchDataForHomePageActionCreator() {
  return async dispatch => {
    await timeout(100)
    dispatch({type: HOMEPAGE_DATA_LOADED})
  }
}

async function homepageHandler(request) {
  const dispatcher = createDispatcher()
  const prepare = dispatcher.wrapActionCreator(fetchDataForHomePageActionCreator)
  await prepare()
  return React.renderToString(<Dispatcher dispatcher={dispatcher}><HomePage /></Dispatcher>)
}

[gaearon]

Thanks for the PRs, please let me take some time before considering this.
I'm going to change some internal parts pretty heavy with #6 so I want to let this hang for a while.

[vslinko]

No problem, I'm just playing with.
I'm trying to implement isomorphic app using redux and I'm sure that I'll want to use redux in production anytime soon.

[gaearon]

Closed via #46

(If this is still relevant pls reopen)