Document the project

[Jarmos-san]

The documentation for the project is not good enough and requires further polishing. The following information will have to be documented and stated properly:

1. Document all the Operating Systems the script is supported on.
2. State the system architectures which are supported (by default and through configurations).
3. Provide disclaimer about security concerns when running the script with root privileges and so on (see Handle script's execution to block when running with root privileges #2 for some reference).
4. Specify how invoking the script multiple times will spin up n number more runners on top of the already existing ones.