Let’s Build: Cryptocurrency Native Mobile App With React Native + Redux — Chapter III
Indrek Lasn

Hello :) 
Really nice article,
I think, following redux.js.org/docs/Troubleshooting.html, that in CrypotReduer it is good to have smth like: 

return Object.assign({}, state, {

so then with immutable new state React will re-render CryptoContainer component and we will be able to f.e. fire componentWillReceiveProps

and avoid .forceRender there as it is async API call.