Add arch-updates to i3bar

Signed-off-by: Knut Ahlers <knut@ahlers.me>

.config/i3blocks/arch-update

@@ -0,0 +1,6 @@
+#!/bin/bash
+
+u=$(checkupdates | wc -l)
+[ $u -gt 0 ] || exit
+
+printf "\uf94f %d %s" $u $(/home/luzifer/bin/pluralize Update $u)

.config/i3blocks/config

@@ -29,6 +29,9 @@ separator_block_width=15
 markup=none
 
 
+[arch-update]
+interval=600
+
 [disk]
 interval=30