No registered env with id: LineFollower-v0

[flynsequeira]

1. pip3 install -e gym_line_follower
   I used 'gym-line-follower' instead of 'gym_line_follower' because the folder name is 'gym-line-follower', and the containing folder 'gym_line_follower' doesn't have setup.py

2. I'm not sure if it matters but I used pip instead of pip3. I only have pip and it corresponds to python3.7

[nplan]

1. You're right. The installation command should be pip3 install -e gym-line-follower. I will update the readme with this fix. Thanks for noticing.
2. This does not matter if you only have one python and pip.

The problem is this:
After you install the environment you should run import gym_line_follower at least once, to add the environment to gym registry. This is demonstrated in the included example. I will update the readme to make it clearer.