Produce guidelines on how to add license analysis data

[jankoritak]

License.sh currently provides license analysis for ~20 licenses - which can be found over here https://github.com/webscopeio/license.sh/tree/master/license_sh/data/analyzed.

There is plenty of room for improvement, as there are many more licenses out there. Reading into a license and extracting important points is also a great way to get to know the license. Should be a good match for "Good First Issue"/"Help Wanted" tag.

Produce README/guidelines on how to do that, so anyone can join the initiative.

• What licenses do we want to document?
• What format do we expect the analysis output in?
• How to contribute with the analysis?
• ...