Fixed README headers rendering issue (#112)

These lines weren't rendering as the headers they're notated to be. Looks worse on the PyPi page [django-webpack-loader](https://pypi.python.org/pypi/django-webpack-loader/0.4.1). My fix causes it to render correctly on GitHub hopefully that will transfer over. Thanks for the work!

Author: 3ygun

README.md

@@ -37,9 +37,11 @@ pip install django-webpack-loader
 ```
 
 <br>
+
 ## Configuration
 
 <br>
+
 ### Assumptions
 
 Assuming `BASE_DIR` in settings refers to the root of your django app.