Showcase companies using Got

[szmarczak]

Fixes #642

Checklist

• I have read the documentation.
• I have included a pull request description of my changes.
• I have included some tests.
• If it's a new feature, I have included documentation updates in both the README and the types.

[szmarczak]

Not sure whether we should include MOXY in the showcase, they're already at the very top of our README. It's up to you Sindre :)

[adityapatadia]

I am wondering how can we add our company name in GOT user?

[szmarczak]

Please comment at #642 or open another issue :)

[szmarczak]

@sindresorhus Is it possible to increase vertical spacing a bit?

[sindresorhus]

@szmarczak I wanted that too, but I'm not sure how to do that while still letting the logos flow.

[szmarczak]

I don't think GitHub supports this at all...