fix(ios-template): bundle script string escape (#182)

Author: frankcalise

template/ios/HelloWorld.xcodeproj/project.pbxproj

@@ -179,7 +179,7 @@
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 			shellPath = /bin/sh;
-			shellScript = "set -e\n\nWITH_ENVIRONMENT=\"$REACT_NATIVE_PATH/scripts/xcode/with-environment.sh\"\nREACT_NATIVE_XCODE=\"$REACT_NATIVE_PATH/scripts/react-native-xcode.sh\"\n\n/bin/sh -c \"$WITH_ENVIRONMENT $REACT_NATIVE_XCODE\"\n";
+			shellScript = "set -e\n\nWITH_ENVIRONMENT=\"$REACT_NATIVE_PATH/scripts/xcode/with-environment.sh\"\nREACT_NATIVE_XCODE=\"$REACT_NATIVE_PATH/scripts/react-native-xcode.sh\"\n\n/bin/sh -c \"\\\"$WITH_ENVIRONMENT\\\" \\\"$REACT_NATIVE_XCODE\\\"\"\n";
 		};
 		00EEFC60759A1932668264C0 /* [CP] Embed Pods Frameworks */ = {
 			isa = PBXShellScriptBuildPhase;