Docs improve readability

[iwaduarte]

I have created this doc PR because I think your README.md is great but very hard to get to the point of setting the minimal usage example.

I have edited a little bit and became this:

I have moved the specifics of (getting tokens and M1 installation) to external files. In this way, the user with these specific use cases can go there directly. IMHO I have left the main information on how to set up and install it more easily accessible.

Let me know your thoughts. Cheers.👍

[iwaduarte]

You can check the output of these here: https://github.com/iwaduarte/cross-post/tree/docs

@shahednasser

[shahednasser]

Thank you for this contribution! I think I'm fine with moving the M1 stuff, but the configurations I'd rather keep in the same file. They're an essential piece of information when you're setting up the tool for the first time, so having devs navigate to another document isn't helpful.

[iwaduarte]

Okay, great. I am not used to this amount of configuration before usage in repos. But I guess it is a preference style. I have reverted the change.