Fix access to SwiftLint on M1 macs

ScrollingContentViewController.xcodeproj/project.pbxproj

@@ -845,7 +845,7 @@
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 			shellPath = /bin/sh;
-			shellScript = "if which swiftlint >/dev/null; then\nswiftlint\nelse\necho \"warning: SwiftLint not installed, download from https://github.com/realm/SwiftLint\"\nfi\n";
+			shellScript = "# If we don't do this, then SwiftLint won't be found on M1 macs,\n# because it's installed in /opt/homebrew/bin instead of /usr/local/bin\n# on that platform \nif test -d \"/opt/homebrew/bin/\"; then\n  PATH=\"/opt/homebrew/bin/:${PATH}\"\nfi\nexport PATH\n\nif which swiftlint >/dev/null; then\nswiftlint\nelse\necho \"warning: SwiftLint not installed, download from https://github.com/realm/SwiftLint\"\nfi\n";
 		};
 /* End PBXShellScriptBuildPhase section */