Create VS marketplace entry

[mrlacey]

Need to create the entry in https://marketplace.visualstudio.com/

Also, need to create assets and copy to accompany the listing.

X-Ref #12

[crutkas]

i may need to do this one. I know we can set up a group account.

[mrlacey]

@crutkas I was expecting you might have to do this, depending on what account it's published under.

Issue was created so this wasn't forgotten about and left until the last minute and done in a rush

[crutkas]

I think you can create the text / body and i can whip up the physical entry on marketplace

[mrlacey]

Necessary details at https://github.com/microsoft/Rapid-XAML-Toolkit/blob/dev/Assets/Marketplace/entry.md