Minor fixes + alt code in 1990/baruch

Fixed formatting in README.md.

Add alt code based on authors' suggestion except that the string
replacement was not done because it seems like the output would be not
better but worse. There's a joke in the alternate code section of the
README.md file.

1990/baruch/Makefile

@@ -112,8 +112,8 @@ OBJ= ${PROG}.o
 DATA=
 TARGET= ${PROG}
 #
-ALT_OBJ=
-ALT_TARGET=
+ALT_OBJ= ${PROG}.alt.o
+ALT_TARGET= ${PROG}.alt
 
 
 #################