Tweaks.

tmux.conf

@@ -1,8 +1,9 @@
+set-option -g default-command "reattach-to-user-namespace -l /bin/bash"
 set -g prefix C-a
 unbind C-b
 set -sg escape-time 1
 set -g base-index 1
-bind r source-file ~/.tmux.conf
+bind r source-file ~/.tmux.conf; display "Reloaded!"
 bind C-a send-prefix
 bind | split-window -h
 bind - split-window -v
@@ -20,6 +21,8 @@ set -g status-fg white
 set -g status-bg black
 
 set-window-option -g mode-keys vi
+unbind [
+bind Escape copy-mode
 unbind p
 bind p paste-buffer
 bind -t vi-copy 'v' begin-selection