update doc

[novski]

I updated the doc section and added some independent files.
MacOS and Debian builds are tested on vm's.
both show a error when starting with ./servonk run glutin --release
@will says it may be related to the vm what i did not get in to yet.

[will]

I never said that!

[novski]

sorry, i may missused the @ in front of the name and ment a different guy out of our Telegram Groupe.
Please excuse the miss-linking.

[madb1lly]

I'm @madb1lly in github ;)
@novski good write up :) A few points:

• Does Glutin need to be shown in the stack for desktop?
• "earlyer" should be "earlier"; I haven't done a full spell check
• Have you built for a device using Gonk? I personally think it would be more helpful to have device specific guides, e.g. How to build for Nexus 5, Z3 Compact, Flame, etc.

See my PR for a suggested document structure: #25