Summary:
- Fix some typos.
- Move Objective-C/Swift code blocks under one heading with code tabs.
- Fix hierarchy so that sidebar is actually useful.
Adding a top-level Android/iOS(Swift)/iOS(ObjC) switch is really, really
painful to do right now. What RN does for this is incredibly gross (sorry, but I'm sure they'd agree)
and precarious. It only takes one incorrectly placed newline to break everything.
Let's avoid that for now.
Reviewed By: jknoxville
Differential Revision: D15123871
fbshipit-source-id: b1184dbbaf3e38b09596ce4e0f0d4daa79b8e33f