Add polybar launcher bash script

launch_polybar.sh

@@ -0,0 +1,9 @@
+#!/bin/bash
+
+# Terminate already running bar instances
+killall -q polybar
+# If all your bars have ipc enabled, you can also use 
+# polybar-msg cmd quit
+
+# Launch Polybar, using default config location ~/.config/polybar/config
+polybar example 2>&1 | tee -a /tmp/polybar.log & disown