Summary:From the documentation I thought I only had to sign an application if I intended to publish it to the Play Store. Turns out this is not true. Signing is still required if you want to install the APK on any device at all. Unsigned APK's are for simulators only.
Closes https://github.com/facebook/react-native/pull/6795
Differential Revision: D3133747
fb-gh-sync-id: ae91111cb20984ebe8ac2443971b373a3f4c848e
fbshipit-source-id: ae91111cb20984ebe8ac2443971b373a3f4c848e