Bug: Launch instructions do not work

[pushfoo]

Describe the bug
The instructions for installing and running the game do not result in launching the game.

To Reproduce

Steps to reproduce the behavior:

1. Open the run instructions in doc/install.rst
2. Follow the instructions
3. Activate the virtual environment
4. Attempt to run the game with python source
5. The game is not launched, and no error message is produced

Instead, the game can be launched and played soundlessly by switching into the source directory and running python __init__.py. This is less than ideal.

Expected behavior
The game launches when following the launch instructions.

Desktop (please complete the following information):

• OS: Debian GNU/Linux 11 (bullseye) x86_64
• Python: 3.9.2
• Arcade: 2.6.13, installed via requirements.txt per install instructions

Proposed solution
Update the game to follow the example of the community RPG project:

1. Install using only setup.py
2. Use > python -m modulename or > commandname to run the game