getState for non-redux version

There is no getState for createGlobalState (the one you use without redux).

So its not possible to get the state inside a non-react functional component without write this hack.

    var state;
    setGlobalState('login', v => {
      state = v;
      return v;
    });

[dai-shi]

Anyway, let’s merge #18.

[dai-shi]

In short, I would only export keyed API. If someone really need a whole object, one can do the following:

const getWholeGlobalState = () => {
  const obj = {};
  Object.keys(initialState).forEach((key) => {
    obj[key] = getGlobalState(key);
  });
  return obj;
};

This is a bit of extra work, and one should use getGlobalState(key) whenever possible.

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What’s important here is that the fact that this library uses observedBits is an implementation detail, and React may drop this API at any time. If it’s simply dropped, I would change the implementation to use multiple contexts and the getWholeGlobalState might be implemented just like the above. I believe that exporting getWholeGlobalState encourages the misuse of it.