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+## Contributor agreement
+
+Apple requires contributors to iOS projects to relicense their code on submit. We'll have to have individual contributors sign something to enable this.
+
+Our volunteer legal have put together a form you can sign electronically. So no scanning, faxing, or carrier pigeons involved. How modern:
+https://whispersystems.org/cla/
+
+Please go ahead and sign, putting your github username in "Address line #2", so that we can accept your pull requests at our heart's delight.
+
+## Code Conventions
+
+Follow all [Signal-iOS Code Conventions](https://github.com/WhisperSystems/Signal-iOS/blob/master/CONTRIBUTING.md).
+