tmux: Start with base index as 1

Start numbering for panes and windows from 1, it is just convenient.

tmux/.tmux.conf

@@ -4,10 +4,10 @@ set-option -g prefix M-a
 bind-key M-a send-prefix
 
 # start with window 1 (instead of 0)
-# set -g base-index 1
+set -g base-index 1
 
 # start with pane 1
-# set -g pane-base-index 1
+set -g pane-base-index 1
 
 # split panes using | and -, make sure they open in the same path
 bind | split-window -h -c "#{pane_current_path}"