Expand Getting started document

[mrpackethead]

Summary:
Expand the getting started a document with more detail on how to install the stack, and use the CLI, particularly using the CLI remotely.

Why do we need this?
Without this information, its very difficult for someone who wants to stand up the stack ( who is not a stack developer ) for testing their devices/gateways against is very difficult. Its a little bit of a black hole.

What is already there? What do you see now?
The getting started a document in the git repo

What is missing? What do you want to see?

(1) Expanding the documentation with more detail to install
(2) Expanding information on how to use the CLI both locally and remotely.
...

How do you propose to implement this?
If someone could walk me through the process, I would be happy to write 'sys-admin' level documents for people to install on *nix type systems.

What can you do yourself and what do you need help with?
I can write / edit / expand on current documents. I need some help with being shown how to do it once. I have a system available running Debian 9, in AWS, which can be used.

[johanstokking]

Also adding class C example to the wish list.

[htdvisser]

As soon as a v3.0.0 release is tagged, we should stop recommending using the cli in Docker, but use the locally installed (with apt/brew/binary...) version instead #86.

[johanstokking]

I'm doing a quick clarification/typo roundup