* [macos] RC 1 errata
Synchronized bundled README installation instructions with those in INSTALL.md. Bumped screenshot up a bit. Corrected link to published documentation.
* [ios, macos] Corrected podspec URLs
Fixed podspec linter errors. The podspecs were pointing to unreachable (or soon to be unreachable) screenshot URLs. The -symbols podspecs’ names additionally needed to differ from the normal podspecs’ names.