Merge pull request jerry-git#37 from elbosso/master

Mention binder in the readme

README.md

@@ -14,12 +14,16 @@ This repository contains a collection of materials for teaching/learning Python
 
 If you can not access Python and/or Jupyter Notebook on your machine, you can still follow the web based materials. However, you should be able to use Jupyter Notebook in order to complete the exercises.
 
-#### Usage
+#### Usage (locally)
 
 1. Clone or download this repository.
 2. Run `jupyter notebook` command in your command line in the repository directory.
 3. Jupyter Notebook session will open in the browser and you can start navigating through the materials.
 
+#### Usage (Binder in the cloud)
+
+You can also just use [Binder:](https://mybinder.org/) By clicking of this [![Binder](https://mybinder.org/badge_logo.svg)](https://mybinder.org/v2/gh/jerry-git/learn-python3/master) badge, the project is opened in a Jupyter instance in the cloud and you can then navigate to the folders containing the notebooks and start them each and interactively explore them! 
+
 #### Contributing
 See [contributing](https://github.com/jerry-git/learn-python3/blob/master/CONTRIBUTING.md) guide.