fixed makepass and update tmux conf for tmux 2.1

tmux.conf

@@ -9,21 +9,13 @@ set -g status-right '#[default]#[fg=green]#H #[fg=white]%m/%d %I:%M%p #[default]
 
 set-option -g default-command /bin/zsh
 set-option -g default-shell /bin/zsh
-set-window-option -g mode-mouse on 
-set-option -g mouse-select-pane on
-set-option -g mouse-select-window on
+set-window-option -g mouse on 
 set -g terminal-overrides 'xterm*:smcup@:rmcup@'
 
 bind m \
-    set -g mode-mouse on \;\
-    set -g mouse-resize-pane on \;\
-    set -g mouse-select-pane on \;\
-    set -g mouse-select-window on \;\
+    set -g mouse on \;\
     display 'Mouse: ON'
 
 bind M \
-    set -g mode-mouse off \;\
-    set -g mouse-resize-pane off \;\
-    set -g mouse-select-pane off \;\
-    set -g mouse-select-window off \;\
+    set -g mouse off \;\
     display 'Mouse: OFF'

zshrc

@@ -224,7 +224,7 @@ save_dotfiles(){
 
 makepass(){
     LEN=20
-    if [ $# > 0 ] ; then
+    if [ $# > 1 ] ; then
       LEN=$1
     fi
     cat /dev/urandom | base64 | head -c $LEN