Commit 59257c7a authored by nora's avatar nora Committed by Konrad Pozniak

Update CONTRIBUTING.md (#952)

* Update CONTRIBUTING.md

Opened this file out of pure random curiosity and noticed a little bug. Since Tusky got three themes, this file was not up to date anymore.

* Update CONTRIBUTING.md

Removed outdated mention of API level 21 since anything below that isn't supported anymore.
parent 073c673e
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