git mv *.hint -> README.md

There is one exception:

    $ find . -name '*.hint' -execdir git mv '{}' README.md \;
    git statufatal: destination exists, source=1992/albert/albert.hint, destination=1992/albert/README.md

Looking at the two files they differ quite a bit so I've not changed it.
I'll bring this up on GitHub.

1996/gandalf/README.md

@@ -0,0 +1,50 @@
+Best Layout:
+
+    Dean Swift
+    Trinome Communications
+    7, Jeffries Passage
+    Guildford
+    Surrey
+    GU1 4AP
+    England
+
+    http://www.tc3.co.uk/~gandalf/G.HTML
+
+
+Judges' comments:
+
+    To use:
+	make gandalf
+	./gandalf
+
+    Also try:
+
+	For C-shell:
+
+	    setenv PATH ( . $PATH )
+	    hatcat
+	    cathat
+
+	For K-shell, /bin/sh, bash, etc:
+
+	    PATH=.:$PATH
+	    hatcat
+	    cathat
+
+     And next try:
+
+	./cathat
+	`pwd`/cathat		# <--- those are back quotes
+
+     Care to guess why these execute differently?  Only the
+     compiler knows ... ok maybe other things like the author,
+     the judges and maybe you too?
+
+     For mis-leading C pre-processor output, try:
+
+	cc -E gandalf.c
+
+
+Selected notes from the author:
+
+    The program requires an ASCII system.