fixed small issues

Author: piotrwitek

README.md

@@ -1077,7 +1077,7 @@ export const actions = {
 ## TSLint
 
 > Installation  
-`npm i -D jest ts-jest @types/jest`
+`npm i -D tslint`
 
 #### tslint.json
 - Recommended setup is to extend build-in preset `tslint:recommended` (use `tslint:all` to enable all rules)  

docs/markdown/0_setup.md

@@ -11,4 +11,6 @@ npm i -D @types/react @types/react-dom @types/react-redux utility-types
 "react-redux" - `@types/react-redux`  
 ["utility-types"](https://github.com/piotrwitek/utility-types) - usefull utility types used throughout the guide  
 
+> *NB: Guide uses redux v4.x.x types. For version v3.x.x please check [this config](https://github.com/piotrwitek/react-redux-typescript-guide/blob/master/playground/tsconfig.json#L5))  
+
 [⇧ back to top](#table-of-contents)

docs/markdown/3_tools.md

@@ -3,7 +3,7 @@
 ## TSLint
 
 > Installation  
-`npm i -D jest ts-jest @types/jest`
+`npm i -D tslint`
 
 #### tslint.json
 - Recommended setup is to extend build-in preset `tslint:recommended` (use `tslint:all` to enable all rules)