Refreshing dwm status bar using signals. (#332)

Refreshing the status bar is now done using signals.

.local/bin/refbar

@@ -1,6 +1,5 @@
 #!/bin/sh
 
 # Refresh the dwmbar.
-# Right now, now this is done is by killing the sleep in the bar script.
-
-kill "$(pstree -lp | grep -- -dwmbar\([0-9] | sed "s/.*sleep(\([0-9]\+\)).*/\1/")"
+# Send SIGTRAP signal to dwmbar script, which will handle it with a trap.
+pkill -SIGTRAP dwmbar