Add setup/build/install steps to the README

[UebelAndre]

Is your feature request related to a problem? Please describe.
This is probably something you planned to do but thought I'd explicitly ask for it

Describe the solution you'd like
I'd like to be able to run a few commands that I can get from the README.md to get this up and running

Describe alternatives you've considered
I don't think there are any alternatives here

Additional context
No additional context to add

[RLovelett]

It is a very valid concern and one that I am working to address.

Frankly, I have a few issues that to me are higher priority and directly block documentation. Namely swift build does not work (as it should). This is a side effect of Shout#34.

So I have been working on refactoring Shout out of the code base and implementing a libssh wrapper (instead of libssh2/Shout). That actually solves a few problems all at once.

• Build is better (meaning cleaner docs)
• Get support for certificate based authentication (which libssh2 does not support)
• Can fix Standard error is not being captured and reported to GitLab Runner #1 since I am making my own API

This new branch is almost done. Once it is I will start working on documentation.

Thank you for the suggestion.

[RLovelett]

I've added commit 065bd11 which updates the README.md. This should address how to build and how to configure.