Use nicer, more informative icons from FontAwesome

dotfiles/i3status.conf

 }
 
 volume master {
-    format          = "♪%volume"
-    format_muted    = "♪--%%"
+    format          = " %volume"
+    format_muted    = " ---%%"
     device          = "default"
     mixer           = "Master"
     mixer_idx       = 0