Summary:
This stack contains a bunch of improvements I made to smoothen the demo of plugin creating in the Flipper + React Native talk.
With 98% likelihood people will manage the source code of their Flipper plugins in git. This will make sure the `.gitignore` is configured properly ootb
Reviewed By: nikoant
Differential Revision: D21523818
fbshipit-source-id: b2ed769edc8fb9fd320464b05686e817e438f21e
7536c0e930