Only install iOS builds if requested (#1614)

build.sh

@@ -508,7 +508,12 @@ function build_ios_target {
             ../..
     fi
 
-    ${BUILD_COMMAND} install
+    ${BUILD_COMMAND}
+
+    if [[ "$INSTALL_COMMAND" ]]; then
+        echo "Installing ${lc_target} in out/${lc_target}/filament..."
+        ${BUILD_COMMAND} ${INSTALL_COMMAND}
+    fi
 
     if [[ -d "../ios-${lc_target}/filament" ]]; then
         if [[ "$ISSUE_ARCHIVES" == "true" ]]; then

ios/samples/README.md

@@ -41,7 +41,7 @@ command. For example, the following command will build for both devices (ARM64)
 (x86_64) in Debug mode:
 
 ```
-$ ./build.sh -s -p ios debug
+$ ./build.sh -s -p ios -i debug
 ```
 
 When building for the simulator, the sample will then link against the libraries present in