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.

1993/jonth/README.md

@@ -0,0 +1,37 @@
+Most Obfuscated X Program:
+
+	Jon Thingvold
+	University of Oslo
+	Sogn Studentby 8231
+	N 0858 Oslo
+	Norway
+
+
+Judges' comments:
+
+    To use:
+	make jonth		# requires the X11 library
+	./jonth			# must be run on an X11 server
+
+    Use 'h' and 'l' to shift objects left or right.  Use 'k' to
+    rotate and press SPACE to drop.
+
+    This program's output may be even more obfuscated when played 
+    on inverse video.  :-)
+
+
+Selected notes from the author:
+
+    This is jonth (jon's t(h)etris) for the X Window System.
+
+    This program is also an example of data abstraction.  The X array is 
+    after initialization hidden by the well defined macros t, u and F.
+
+    This program is highly portable as it runs on a "Notebook" size SPARC.
+    This program will not work on machines with sizeof(int)!=sizeof(void *).
+
+Copyright (c) 1993, Landon Curt Noll & Larry Bassel.
+All Rights Reserved.  Permission for personal, educational or non-profit use is
+granted provided this this copyright and notice are included in its entirety
+and remains unaltered.  All other uses must receive prior permission in writing
+from both Landon Curt Noll and Larry Bassel.