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Update README to include non-mobile targets (#42873)

* Update README to include non-mobile targets

* Tweak headings
T
Tim Sneath committed
05c3f7b6a18a61026848a88be3587f04c432f92c
Parent: 3352b91
Committed by GitHub <noreply@github.com> on 10/29/2019, 10:57:14 PM