add tutorial placeholder

vacation.p8

@@ -1545,6 +1545,19 @@ end
 
 function start_game()
  seq = sequencer.new{
+  {
+   f=zonk_mode.new,
+   params={{
+    file=[[at:2:55
+hI! iN A LATER VERSION
+THERE WILL BE ACTUAL
+INSTRUCTIONS HERE AND
+THE BG WON'T BE ON.]],
+    txd=0,
+    txf=1,
+    cmul=0.25,
+   }},
+  },
   {
    f = arcade_level.new,
    params = {{
@@ -1554,7 +1567,7 @@ function start_game()
   {
    f = zonk_mode.new,
    params={{
-    file=[[at:15:15
+    file=[[at:40:40
 ZONK TEXT TEST
 #ZONK TEXT #TEST
 $ZONK $TEXT $TEST