Minor updates to 1990

Add thank you note to Cody in some README.md files, remove the warning
that 1990/westley/westley.c might not compile with modern compilers
(since I fixed it) and reworded a statement slightly. Yes I'm thanking
myself but it's actually from the judges.

1990/westley/README.md

@@ -10,12 +10,13 @@
 
         make all
 
-NOTE: This entry might not compile when using modern compilers.
-
 ### To run
 
 	./westley 1
 
+NOTE: [Cody Boone Ferguson](/winners.html#Cody_Boone_Ferguson) fixed this to
+compile under modern systems. Thank you Cody for your assistance!
+
 NOTE: this entry will segfault without an arg and will enter an infinite loop if
 input is not a number (or is a negative number).