Summary:
Random observations
1. RN already generates the Flipper initialization code out of the box
2. This code assumes a prefixed namespace: `facebook.flipper`. Maybe it would be better if that were `appname`, but that seems an unnecessary burden at this point, preventing direct copy / paste possibilities
3. Out of the box, the generated code by RN doesn't align with the code provided here, because no `ReactInstanceManager` argument is passed in (nor does it seem to be available in a straight-forward way)
4. patch MainApplication.java with `getReactNativeHost().getReactInstanceManager()`
5. turn this into an explicit section: https://fbflipper.com/docs/tutorial/js-table.html#dynamic-plugin-loading. Also explain that when using `node_modules`, config doesn't need to be changed?
6. xcode 10! sudo xcode-select -s /Applications/Xcode_10.XXX/Contents/Developer/
7. Also tried to install Reactotron plugins by Infinite Red, got that compilable in the end, but the andoid / ios implementations still seems to be stub, so I'll try to follow up with them later, to be notified when they actually have something
Reviewed By: passy
Differential Revision: D18349098
fbshipit-source-id: 233bbe20a37c57c7dfe08c8fccdd4508bdefe96f
2f5096ddc8