switch to react-redux v7.1.0 and material-ui v4.1.1

Author: spoeck

README.md

@@ -1,6 +1,6 @@
 # Create React App example with Material-UI, TypeScript, Redux and Routing
 
-This is a new verison with React Hooks, Material-UI 4 and React-Redux 7 (hooks are in rc). We use this template for all our new projects. If you want to bootstrap a project with the classic approach without hooks but with class components, you are welcome to use the [previous version](https://github.com/innFactory/create-react-app-material-typescript-redux/tree/v1).
+This is a new verison with React Hooks, Material-UI 4 and React-Redux 7 (with hooks!). We use this template for all our new projects. If you want to bootstrap a project with the classic approach without hooks but with class components, you are welcome to use the [previous version](https://github.com/innFactory/create-react-app-material-typescript-redux/tree/v1).
 
 <img width="100%" src="screenshot.png" alt="example"/>