Summary:
This updates the documentation for the `Text` component itself and the embedded `Text.md` that goes with it.
- React Native Web Player
- Document all props
- NOTE: I actually added a new prop to `Text` called `accessible` since it was set by default and thus shown in the Props list
in the original documentation (but with an empty description).
- Stylistic fixes
Closes https://github.com/facebook/react-native/pull/8445
Differential Revision: D3493112
Pulled By: JoelMarcey
fbshipit-source-id: b428d4eb09065db5c6cb1ae5524ad22084fd2a82
30376aef13