Rename hint.txt and hint.text to README.md

2018/endoh1/README.md

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+# Best tool to reveal holes
+
+Yusuke Endoh  
+Twitter: @mametter  
+
+
+## Judges' comments:
+### To use:
+
+    make
+    ./prog < textfile > output.gif
+
+### Try:
+
+    ./prog < golem.txt > golem.gif
+    ./prog < smily.txt > smily.gif
+
+### Selected Judges Remarks:
+
+To get the best experience, use a GIF viewer that can handle animated gifs.
+On OS X you can use Safari using "open -a Safari smily.gif"
+
+Some things to consider are that this 2.5KiB gem encodes a 96 character 8x8
+font (naively this could already take 6144 bytes) and a GIF encoder.  But
+how does it know which characters are closed?
+
+You should only give this program printable ASCII characters.
+
+Unfortunately this won't run on your PDP8, if you had one, as it needs at
+least 2MiB of memory to run in.
+
+## Author's comments:
+This program generates an animated GIF from a plain text.  Run:
+
+    gcc -o prog prog.c
+    ./prog < invisible.txt > invisible.gif
+
+Open invisible.gif and then wait a minute.  You will see a hidden message.
+Can you tell the difference between letters that leaves the mark and ones that does not?
+
+Other examples:
+
+    ./prog < golem.txt > golem.gif
+    ./prog < smily.txt > smily.gif
+
+The program itself has a hidden message.
+
+    ./prog < prog.c > prog.gif
+
+--------------------------------------------------------------------------------
+<!--
+(c) Copyright 1984-2018, [Leo Broukhis, Simon Cooper, Landon Curt Noll][judges] - All rights reserved
+This work is licensed under a [Creative Commons Attribution-ShareAlike 3.0 Unported License][cc].
+
+[judges]: http://www.ioccc.org/judges.html
+[cc]: http://creativecommons.org/licenses/by-sa/3.0/
+-->