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

2020/endoh3/README.md

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+# Most head-turning
+
+Yusuke Endoh  
+Twitter: @mametter  
+
+
+The code for this entry can be found in prog.c
+
+## Judges' comments:
+### To use:
+
+    make
+    ./prog
+
+### Try:
+
+    ./run_clock
+    # And watch closely for 15-20 seconds
+
+### Selected Judges Remarks:
+
+You may be tempted to use a mirror. Resist the temptation! Try figuring out how the clock hands are drawn.
+Can you change the program to make it draw a familiar (non-mirrored) clock face? Can you add the second hand?
+
+When using the `run_clock` shell script, your perception of time might depend on what time it is.
+
+## Author's comments:
+Prepare a mirror!
+
+    $ make clock
+
+Note: You need to recompile it each run.
+
+---
+
+prog.alt.c is an alternate version that uses Unicode letters, which was suggested by the judges.
+
+-----------------------------------------------------------------------------------------------------
+(c) Copyright 1984-2020, [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/
+-----------------------------------------------------------------------------------------------------