Add the ability to disable install

.gitignore

@@ -0,0 +1 @@
+.disabled

install.sh

@@ -1,7 +1,14 @@
 #!/usr/bin/env bash
 
+run_directory=$(dirname "$0")
+
+if [ -f $run_directory/.disabled ]; then
+  echo "Installation is disabled. Exiting..."
+  exit 0
+fi
+
 echo "Copying Systemd units to user's directory..."
-cp $(dirname "$0")/pulseaudio-dlna.service $HOME/.config/systemd/user/
+cp $run_directory/pulseaudio-dlna.service $HOME/.config/systemd/user/
 
 echo "Reloading Systemd's user runtime..."
 systemctl --user daemon-reload