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CONTRIBUTING.md

@@ -1,7 +1,9 @@
 ## Contributing
+
 If you would like to contribute to spotipy follow these steps:
 
 ### Export the needed environment variables
+
 ```bash
 export SPOTIPY_CLIENT_ID=client_id_here
 export SPOTIPY_CLIENT_SECRET=client_secret_here
@@ -9,10 +11,26 @@ export SPOTIPY_CLIENT_USERNAME=client_username_here # This is actually an id not
 export SPOTIPY_REDIRECT_URI=http://localhost/ # Make url is set in app you created to get your ID and SECRET
 ```
 
-### Create virtual enevironment, install dependencies, run tests:
+### Create virtual environment, install dependencies, run tests:
+
 ```bash
 $ virtualenv --python=python3.7 env
 (env) $ pip install requirements.txt
 (env) $ python -m unittest discover -v tests
 ```
 
+### Lint
+
+To automatically fix the code style:
+
+    pip install autopep8
+    autopep8 --in-place --aggressive --recursive .
+
+To verify the code style:
+
+    pip install flake8
+    flake8 .
+
+### README
+
+Don't forget to add a short description of your change in the [CHANGELOG](CHANGELOG.md)