Bug fix and add alt code to 2005/anon

Previously the alt rule in the Makefile defined NO_STTY which stops the
code from using stty(1) at the beginning and at the end. The stty sane
resulted in a bus error in macOS and since the sole purpose was to set
echo back on I changed it to stty echo (which works). (The NO_STTY macro
is still checked, see below.)

Added alt code with vi(m) like movements.

The way to get it to not use stty is to use either make alt-no_stty or
no_stty. The former will compile into anon.alt and the latter will
compile into anon.

Format and typo fix README.md file.

2005/anon/Makefile

@@ -131,15 +131,20 @@ all: data ${TARGET}
 ${PROG}: ${PROG}.c
 	${CC} ${CFLAGS} $< -o $@ ${LDFLAGS}
 
-${PROG}.alt: ${PROG}.c
-	${CC} ${CFLAGS} -DNO_STTY $< -o $@ ${LDFLAGS}
-
+no_stty: ${PROG}.c
+	${CC} ${CFLAGS} -DNO_STTY $< -o ${PROG} ${LDFLAGS}
 
 # alternative executable
 #
 alt: data ${ALT_TARGET}
 	@${TRUE}
 
+${PROG}.alt: ${PROG}.alt.c
+	${CC} ${CFLAGS}  $< -o $@ ${LDFLAGS}
+
+alt-no_stty: ${PROG}.alt.c
+	${CC} ${CFLAGS} -DNO_STTY  $< -o ${PROG}.alt ${LDFLAGS}
+
 # data files
 #
 data: ${DATA}