Merge pull request #51 from befair/master

Update README with the eval env instructions

Author: mjhea0

README.md

@@ -12,7 +12,8 @@ Blog post -> https://realpython.com/blog/python/django-development-with-docker-c
 ### OS X Instructions
 
 1. Start new machine - `docker-machine create -d virtualbox dev;`
+1. Configure your shell to use the new machine environment - `eval $(docker-machine env dev)`
 1. Build images - `docker-compose build`
 1. Start services - `docker-compose up -d`
 1. Create migrations - `docker-compose run web /usr/local/bin/python manage.py migrate`
-1. Grab IP - `docker-machine ip dev` - and view in your browser
+1. Grab IP - `docker-machine ip dev` - and view in your browser