Minimal documentation/readme

[kolayne]

This would be nice if you'd add some minimal documentation and/or a "Usage" or "Executing" section to README.md. Either of them should explain how do I run my own instance of MathBattle. It is important because without such instruction it's really hard for newcomers to start contributing to your project, among other reasons.

[CoffeBee]

We push our first readme version, we are waiting for your proposal about it)

[kolayne]

Well, to my mind the README suffers from mentioning all the requirements as a command (while it could and should have been moved to requirements.txt), but now I understand how to run the project, so you can close the issue if you think it's resolved

By the way, isn't the following line a typo?
'PASSWORD' : '<YOUR_DATABASE_PASSWORD_HERE>gres',
If no, you probably need to state it explicitly

[CoffeBee]

Typo with Password fixed in 57fc997, requirements.txt will be added later.