Do notify about sleeping

dotfiles/bash/main.bashrc

@@ -45,6 +45,7 @@ bb() {
     # Ring the bell
     #
     local stime=${1:-0}
+    test "$stime" == 0 || echo -e "sleeping for $BASHUM_COLOR_LGREEN$stime$BASHUM_COLOR_NORMAL"
     sleep "$stime"
     printf '\a'
 }