Add 'Shutting Down.' message to main menu, matches in-game. Adjust wording of exit function, to match in-game

fallout.py

@@ -38,7 +38,7 @@ try:
                 sleep(0.2)
             sel = 0
             while sel != 3:
-                sel = select.beginSelection(data.ROBCO_HEADERS, data.SOFT_HEADERS, data.MAIN_MENU)
+                sel = select.beginSelection(data.ROBCO_HEADERS, data.SOFT_HEADERS, data.MAIN_MENU, data.MAIN_MSGS)
                 while not queueIsEmpty():
                     sleep(0.2)
                 if   sel == 0:

fallout_data.py

@@ -37,7 +37,7 @@ MAIN_MENU = (
     'Lock Control',
     'Turret Control',
     'Read Log',
-    'Logoff Terminal'
+    'Log out'
 )
 
 LOCK_MENU = {
@@ -52,6 +52,13 @@ TURRET_MENU = {
     'RETURN': ["Return"]
 }
 
+MAIN_MSGS = (
+    '',
+    '',
+    '',
+    'Shutting Down.'
+)
+
 TURRET_MSGS = {
     'TARGETING': ['Target Data Cleared. Exercise Caution.', '<!>Please Exercise Caution<!>'],
     'ENABLED': ['Powering Down...', 'Booting...'],