Problems you might encounter

Error calling AppRegistry.runApplication

Ensure that the debug server is running (react-native start)
Once it's running, RELOAD is sufficient

Unable to resolve module `react/lib/ReactDebugCurrentFrame`

Output from npm install: npm WARN [email protected] requires a peer of [email protected] but none was installed.
Resolution: npm install --save [email protected]

Could not connect to the development server when running on physical Android device

adb reverse tcp:8081 tcp:8081