Redux Tests

[AllenFang]

Use redux-api-middleware instead of redux-thunk

• reducers
• actions
• redux-api-middleware test

[AllenFang]

@CYBAI please check AllenFang@86d55e9 and AllenFang@0844659

I only have this two commit in my fork, and this both commits is for using fetch with redux-fetch-middleware instead of using fetch with redux-thunk.

Something need discuss:

1. in the there, due to those fetch action is not async anymore, but action creator must return an object with type(This is rule by calling bindActionCreator). So I force return a no operation(aka, NO_OP) action. Actually, there's a middleware call redux-multi which can help us to return multiple action creator, but it most like out of maintain for a very long time and also have some bug(But I've give a try with ungit).

2. redux-fetch-middleware is also seems like out of maintain.

3. Using this middleware will force us to use store.dispatch in action, like here and here

Please let me know your concern, it's just a experiment and we dont must use it but if we want to use this, I can base this two commits to create another PR.

Thanks

[AllenFang]

BTW, The test of reducers are done, please review.

[CYBAI]

@AllenFang

1. About redux-fetch-middleware, due to out of maintain, I'm not sure if we can change to redux-api-middleware.
2. I'll review this PR in these days; in the meantime, could you help to add .travis.yml to trigger the travis?

Thanks.

[AllenFang]

It seems a good idea to use redux-fetch-middleware, but I think return multi actionCreator and using store.dispatch still can't be avoid? I need to check more but I guess this two issues still remain even we use redux-fetch-middleware.

[CYBAI]

Test part LGTM.
Could you help to add .travis.yml to trigger testing?

[CYBAI]

Merge this PR first, have to fix TypeError: Cannot read property 'async' of undefined later.