Create EVOLUTION (#512)

res/GAMEHELP/EVOLUTION

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+
+        Eat DNA, flies, cheese
+
+  Build dam, hit monkeys, kill mutants
+
+
+  joystick or keyboard, space to start
+
+                   A
+           move  <   >  move
+                   Z
+
+    button or space to evade / fire
+
+
+Esc* * * * * * * * * * * * * * * * pause
+
+Ctrl-S * * * * * * * * * * * * * * sound
+
+Ctrl-J * * * * * * * * * * * * *joystick 
+
+Ctrl-K * * * * * * * * * * * * *keyboard
+
+H* * * * * * *show high scores from demo
+[eof]