Add HousingAnywhere logo to GraphQL users

[dseelmann]

Proud to use GraphQL for over a year now
https://housinganywhere.com

[facebook-github-bot]

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[dseelmann]

Signed

[facebook-github-bot]

Thank you for signing our Contributor License Agreement. We can now accept your code for this (and any) Facebook open source project. Thanks!

[wincent]

Thanks @dseelmann!