tmux: use pane_current_path when splitting

Signed-off-by: Alejandro Mery <amery@geeks.cl>

files/.tmux.conf

@@ -50,8 +50,8 @@ bind -r n select-window -t :+
 
 # panes
 #
-bind | split-window -h
-bind - split-window -v
+bind | split-window -h -c "#{pane_current_path}"
+bind - split-window -v -c "#{pane_current_path}"
 
 bind h select-pane -L
 bind j select-pane -D