added tmux-ressurect and updated readme

tmux.conf

@@ -1,3 +1,15 @@
+# Tmux plugins, requires tmux plugin manager
+set -g @plugin 'tmux-plugins/tpm'
+set -g @plugin 'tmux-plugins/tmux-sensible'
+set -g @plugin 'tmux-plugins/tmux-resurrect'
+
+# Other examples:
+# set -g @plugin 'github_username/plugin_name'
+# set -g @plugin 'github_username/plugin_name#branch'
+# set -g @plugin 'git@github.com:user/plugin'
+# set -g @plugin 'git@bitbucket.com:user/plugin'
+
+
 # Config that is very close to a i3 window manager's keybinding.
 set -s escape-time 0
 setw -g aggressive-resize on
@@ -104,3 +116,7 @@ bind-key ')' join-pane -t :10
 
 # Kill Selected Pane
 bind-key q kill-pane
+
+
+# Initialize TMUX plugin manager (keep this line at the very bottom of tmux.conf)
+run '~/.tmux/plugins/tpm/tpm'