Added some nullability qualifiers in method implementation selectors for consistency with declarations.
The user dot view now has a non-zero size. Previously only its layer was sized properly. Also resolved some pedantic warnings about missing designated initializer overrides.
Xcode 6.3 or above is now required for building this project.
Deprecated `-mapID` and `-setMapID:` to accurately reflect the APIs the ID is used for. Marked the property unavailable but reimplemented its getter and setter to assert with helpful messages.
Fixes#1500.
Ran this through `./ios/docs/install_docs.sh` to double-check things.
* Less-specific initializers above more-specific per Apple convention.
* Shores up `accessToken` docs as property, not a method.
* Edited comments for consistency and/or to keep them out of the docs.
Declared these IB-specific inspectables in a separate category that developers are not expected to import. Currently these inspectables are order-dependent due to #1181.
Ref #929
