added utility types to setup

Author: piotrwitek

README.md

@@ -56,13 +56,14 @@ You should check Playground Project located in the `/playground` folder. It is a
 
 ### Installing types
 ```
-npm i -D @types/react @types/react-dom @types/react-redux
+npm i -D @types/react @types/react-dom @types/react-redux utility-types
 ```
 
 "react" - `@types/react`  
 "react-dom" - `@types/react-dom`  
 "redux" - (types included with npm package)*  
 "react-redux" - `@types/react-redux`  
+["utility-types"](https://github.com/piotrwitek/utility-types) - usefull utility types used throughout the guide  
 
 [⇧ back to top](#table-of-contents)
 

docs/markdown/0_setup.md

@@ -2,12 +2,13 @@
 
 ### Installing types
 ```
-npm i -D @types/react @types/react-dom @types/react-redux
+npm i -D @types/react @types/react-dom @types/react-redux utility-types
 ```
 
 "react" - `@types/react`  
 "react-dom" - `@types/react-dom`  
 "redux" - (types included with npm package)*  
 "react-redux" - `@types/react-redux`  
+["utility-types"](https://github.com/piotrwitek/utility-types) - usefull utility types used throughout the guide  
 
 [⇧ back to top](#table-of-contents)