Convert specs document into documentation

[zaibon]

Now that we have most MVP we should start to reformulate specification document into actual documentation.

Modules to do:

• network (@delandtj)
• container (@muhamadazmy)
• storage (@muhamadazmy)
• identity (@muhamadazmy)
• upgrade (@zaibon)
• flist (@zaibon)
• zinit
• zbus

[zaibon]

Starting Today (1st August 2019) each owner of the repository will commit to every 2 days deliver a documentation for a modules.

I believe doing it like that we can be done with this task within 1 week.