chore(osx): install rosetta

knowledge base/mac os x/README.md

@@ -185,6 +185,11 @@ xattr -c '/path/to/app.app'
 # Bypass Gatekeeper for all versions of apps.
 xattr -d 'com.apple.quarantine' '/path/to/app.app'
 xattr -dr 'com.apple.quarantine' '/path/to/directory'
+
+
+# Install Rosetta
+# Very difficult to remove, once installed
+softwareupdate --install-rosetta --agree-to-license
 ```
 
 ## Taking screenshots