message: Small changes to iOS readme
  Add `-i` flag to ensure installs and "apps" is now plural.
diff: -# Filament sample iOS app
  +# Filament sample iOS apps
  This directory contains sample apps that demonstrate how to use the Filament API in an iOS
  application.
  @@ -14,8 +14,8 @@ cross-compile Filament for desktop and ARM64 on a macOS host before running the
  way to do this is by running the following commands at the root of Filament's source tree:
  ```
  -$ ./build.sh -p desktop release # build required desktop tools (matc, resgen, etc)
  -$ ./build.sh -p ios debug # cross-compile Filament for iOS
  +$ ./build.sh -p desktop -i release # build required desktop tools (matc, resgen, etc)
  +$ ./build.sh -p ios -i debug # cross-compile Filament for iOS
  ```
  This will automatically download Apple's iOS toolchain file for CMake and build Filament for iOS.
  