Updated setup function to reset parameters and updated the FAQs.

[rai-pranav]

Summary

• Added a big red note to clarify that alyx.example.com is not a real database but an example URL.
• Explained how to reset parameters with defaults for Open Alyx.
• Added make_default=True to the example and documented this argument.

Fixes #159

[k1o0]

Thanks a lot for contributing! I need to think about whether we want to always use the OpenAlyx defaults in silent mode. Currently silent=True combined with make_default=True allows us to change which database to use by default. With your change this would break all non-public database configurations. For this reason I was leaning towards a reset/clear params method (#155) instead. I'll take a closer look at this PR tomorrow.

[k1o0]

I think I'll change it slightly to use defaults in silent mode only when it's OpenAlyx. Thanks again for these changes!

[rai-pranav]

I was just trying to explore this repo, and found this one issue, as good first issue, so decided to delve into. If there are some other issues that can help in understanding the codebase better etc., and can be handled without knowing too much about the codebase, then I am happy to contribute. Let me know.