Added .crf to every sample-program

test_program.crf

@@ -1,28 +1,28 @@
--- data Maybe (a) where {
+data Maybe () where {
---     Nothing : Maybe (a)
+    Nothing : Maybe
---     Just : a -> Maybe (a)
+    Just : Int -> Maybe
---     };
+    };
 
--- fmap : (a -> b) -> Maybe (a) -> Maybe (b) ;
+fmap : (Int -> Int) -> Maybe -> Maybe ;
--- fmap f ma = case ma of {
+fmap f ma = case ma of {
---     Nothing => Nothing ;
+    Nothing => Nothing ;
---     Just a => Just (f a) ;
+    Just a => Just (f a) ;
--- };
+};
 
--- pure : a -> Maybe (a) ;
+pure : Int -> Maybe ;
--- pure x = Just x ;
+pure x = Just x ;
 
--- ap mf ma = case mf of {
+ap mf ma = case mf of {
---     Just f => case ma of {
+    Just f => case ma of {
---         Nothing => Nothing;
+        Nothing => Nothing;
---         Just a => Just (f a);
+        Just a => Just (f a);
---     };
+    };
---     Nothing => Nothing;
+    Nothing => Nothing;
--- };
+};
     
--- return = pure;
+return = pure;
 
--- bind ma f = case ma of {
+bind ma f = case ma of {
---     Nothing => Nothing ;
+    Nothing => Nothing ;
---     Just a => f a ;
+    Just a => f a ;
--- };
+};