Add simple tests of save and resume.

tests/saveresume.1.chk

@@ -0,0 +1,27 @@
+
+Welcome to Adventure!!  Would you like instructions?  
+
+> n
+
+You are standing at the end of a road before a small brick building.  
+Around you is a forest.  A small stream flows out of the building and 
+down a gully.  
+
+> seed 1240742801
+Seed set to 1240742801
+
+You're in front of building.  
+
+> save
+
+I can suspend your Adventure for you so that you can resume later, but
+it will cost you 5 points.   
+
+Is this acceptable?
+
+> y
+
+OK   
+
+File name: 
+To resume your Adventure, start a new game and then say "RESUME".