Added badge and prepush hook

Author: piotrwitek

README.md

@@ -23,7 +23,7 @@ _"This guide is a **living compendium** documenting the most important patterns
 - Reference implementation of Todo-App: [typesafe-actions-todo-app](https://github.com/piotrwitek/typesafe-actions-todo-app)
 
 ### Playground Project
-[![Codeship Status for piotrwitek/react-redux-typescript-guide](https://app.codeship.com/projects/11eb8c10-d117-0135-6c51-26e28af241d2/status?branch=master)](https://app.codeship.com/projects/262359)
+[![Build Status](https://semaphoreci.com/api/v1/piotrekwitek/react-redux-typescript-guide/branches/master/shields_badge.svg)](https://semaphoreci.com/piotrekwitek/react-redux-typescript-guide)
 
 You should check out Playground Project located in the `/playground` folder. It is a source of all the code examples found in the guide. They are all tested with the most recent version of TypeScript and 3rd party type definitions (like `@types/react` or `@types/react-redux`) to ensure the examples are up-to-date and not broken with updated definitions.
 > Playground was created in such a way that you can simply clone the repository locally and immediately play around on your own. It will help you to learn all the examples from this guide in a real project environment without the need to create some complicated environment setup by yourself.

README_SOURCE.md

@@ -23,7 +23,7 @@ _"This guide is a **living compendium** documenting the most important patterns
 - Reference implementation of Todo-App: [typesafe-actions-todo-app](https://github.com/piotrwitek/typesafe-actions-todo-app)
 
 ### Playground Project
-[![Codeship Status for piotrwitek/react-redux-typescript-guide](https://app.codeship.com/projects/11eb8c10-d117-0135-6c51-26e28af241d2/status?branch=master)](https://app.codeship.com/projects/262359)
+[![Build Status](https://semaphoreci.com/api/v1/piotrekwitek/react-redux-typescript-guide/branches/master/shields_badge.svg)](https://semaphoreci.com/piotrekwitek/react-redux-typescript-guide)
 
 You should check out Playground Project located in the `/playground` folder. It is a source of all the code examples found in the guide. They are all tested with the most recent version of TypeScript and 3rd party type definitions (like `@types/react` or `@types/react-redux`) to ensure the examples are up-to-date and not broken with updated definitions.
 > Playground was created in such a way that you can simply clone the repository locally and immediately play around on your own. It will help you to learn all the examples from this guide in a real project environment without the need to create some complicated environment setup by yourself.