Get 2000/schneiderwent to compile

It uses trigraphs so it needs the -trigraphs option at the compiler.

As well the README.md was format fixed.

2000/schneiderwent/Makefile

@@ -181,6 +181,10 @@ all: data ${TARGET}
 	love haste waste maker easter_egg sandwich \
 	supernova deep_magic magic charon pluto
 
+# FORCE use of -trigraphs
+#
+CFLAGS+= -trigraphs
+
 ${PROG}: ${PROG}.c
 	${CC} ${CFLAGS} $< -o $@ ${LIBS}