convert more spoiler into deobfuscation

README.md

@@ -128,9 +128,10 @@ often have bugs, or features which result the program failing to compile.  You
 may have to do some syntax changing as we did to get old programs to compile on
 strict ANSI C compilers.
 
-Last, read the judges' remarks/spoilers on the program.  Hints for `foo.c` are
+Last, read the judges' remarks and deobfuscation information on the program.  Hints for `foo.c` are
 given in `index.html`.  Often they will contain suggested arguments or
-recommended data to use. Authors also sometimes give spoilers.
+recommended data to use. Authors also sometimes provide deobfuscation information
+about their entries.
 
 If you do gain some understanding of how a program works, go back to the source
 and reexamine it using some of the techniques outlined above.  See if you can