Add make test rule to 2012/zeitak + formatting

The make test rule runs the new test.sh script which checks the return
value of the program run on a variety of new files (and the old
incorrect.c which was renamed incorrect.paren.c). The new files include
1984/anonymous.c and 1984/anonymous.alt.c as the author explicitly
mentioned that entry.

The README.md file has been format/typo checked.

2012/zeitak/Makefile

@@ -113,7 +113,7 @@ ENTRY= zeitak
 PROG= ${ENTRY}
 #
 OBJ= ${PROG}.o
-DATA= incorrect.c
+DATA= incorrect.paren.c incorrect.brace.c incorrect.bracket.c
 TARGET= ${PROG}
 #
 ALT_OBJ= ${PROG}.alt.o
@@ -135,6 +135,10 @@ all: data ${TARGET}
 ${PROG}: ${PROG}.c
 	${CC} ${CFLAGS} $< -o $@ ${LDFLAGS}
 
+test: test.sh
+	./$< || exit 1
+
+
 # alternative executable
 #
 alt: data ${ALT_TARGET}