Adding WSL guide

[germa89]

Adding Windows Subsystem Linux Guide to Developer guide.

This guide is useful to allow the developers to run native linux code/programs from their windows machines.

[PipKat]

I feel like I might need to see this all incorporated within the guide to understand its purpose. I suppose you need an approval to incorporate what you've got--so I will mark it that way.

[akaszynski]

I feel like I might need to see this all incorporated within the guide to understand its purpose. I suppose you need an approval to incorporate what you've got--so I will mark it that way.

Let’s do a follow up once the docs are built from nightly.