Copied strip-frameworks.sh from realm/realm-cocoa@7cc31db631 for realm/realm-cocoa#2759. This script, which is embedded in the dynamic framework, strips out content for invalid architectures from any embedded framework and specifically strips out Simulator content when archiving to work around an App Store bug.
Rewrote the iOS setup documentation. In particular, the MAPBOX_ACCESS_TOKEN environment variable is only for use with the iosapp demo application and doesn’t work in third-party applications.
Rewrote some copy to provide more context and link to more GL-related repos, including GL JS. Put the various SDKs in a table so we can show the various CI bot status images.
Integrated target list into the relevant documents. Rewrote large portions of iOS and OS X setup documentation to guide normal developers to more friendly places. Combined some Android documentation.
Moved SDK-specific documentation into platform/. Added a temporary readme in ios/ that points to the one in platform/ios/.
