Add snapshotState for any JSON serializable data

[kasbah]

Could be used with Redux for instance:

const store = redux.createStore(reducer, window.snapshotState || initialState)

store.subscribe(() => {
  window.snapshotState = store.getState()
})

• Can add some documentation if you are interested.

• It might be better to depend on js-stringify instead of JSON, what do you think?

[kasbah]

I just noticed #30 though I haven't caught up with the full discussion there. I still think giving access to a global variable like this goes a long way and is very flexible while keeping things simple. Maybe we should call it something else since you are already adding a window.react_snapshot_state.

[stereobooster]

In react-snap I use a bit different approach instead of state I save any JSON requests in global store window.snapStore[<path>] so when application is loaded it does not need to do network requests for current page. WDYT?

[geelen]

This got merged with 74f7fc5 but GH didn't pick it up. I've gone and renamed it to window.react_snapshot_state too.