Put placeholder for per-platform installers

install.sh

@@ -24,4 +24,12 @@ fi
 echo "Set pwd to $APP_DIR"
 cd "$APP_DIR"
 APP_DIR="$(pwd)"
+
+if [ "$(uname)" == "Linux" ]; then
+  # TODO: add support for different distributions
   ./install-ubuntu.sh
+elif [ "$(uname)" == "Darwin" ]; then
+  echo TODO: install-macos.sh
+else
+  echo Unsupported environment, need to manual install
+fi