Reformat and add tiny bit to ~/.tmux.conf

tmux.conf

@@ -1,15 +1,9 @@
-# need me some vi mode
-setw -g mode-keys vi
-
-set -g default-command /bin/zsh
-set -g default-shell /bin/zsh
-
-set-option -g prefix C-b
-
 bind-key C-b last-window
-
-set -s escape-time 0
-
-set -g history-limit 100000
-
-set -g default-terminal 'screen-256color'
+set-option -g default-command /bin/zsh
+set-option -g default-shell /bin/zsh
+set-option -g default-terminal 'screen-256color'
+set-option -g history-limit 100000
+set-option -g prefix C-b
+set-option -g renumber-windows on
+set-option -s escape-time 0
+setw -g mode-keys vi