React redux practice

implemented simple react-redux app

What I learned

uses of react-redux

npm i redux react-redux
set Provider, store in the index.js
implement action creators
- action creater is a function which returns an action (type and data as an object)
implement reducers
- reducer is a function stored in store
- return data from action
- make multiple reducers to a module using combineReducers
implment component using connect
- connect is a method which returns components with stored state
- first argument is mapStateToProps which provides props to components using state from reducer
- second argument is action to be dispatched
- action can be called in the components as a prop, and will be dispatched for operating a reducer