fix .gitignore, Makefile and README.md for 2018/algmyr

2018/algmyr/Makefile

@@ -1,6 +1,6 @@
 #!/usr/bin/env make
 #
-# IOCCC 2018 winning entry - algmyr
+# IOCCC 2015 winning entry - algmyr
 
 ################################################################################
 #
@@ -76,7 +76,7 @@ CWARN= -Wall -Wextra -pedantic ${CSILENCE}
 #
 #CSTD=
 #CSTD= -ansi
-CSTD= -std=gnu17
+CSTD= -std=gnu11
 
 # Compiler bit architecture
 #
@@ -101,8 +101,8 @@ CINCLUDE=
 #CINCLUDE= -include stdlib.h
 #CINCLUDE= -include stdio.h
 #CINCLUDE= -include stdlib.h -include stdio.h
-#CINCLUDE= -I ${X11_INCDIR}
-#CINCLUDE= -I ${HOMEBREW_PREFIX}/include/SDL2
+#CINCLUDE= -I ${X11_INCDIR} -I ${X11_INCDIR}/X11
+#CINCLUDE= `${SDL2_CONFIG} --cflags`
 
 # Optimization
 #
@@ -126,7 +126,7 @@ CFLAGS= ${CSTD} ${CWARN} ${ARCH} ${CDEFINE} ${CINCLUDE} ${OPT}
 LIBS=
 #LIBS= -lm
 #LIBS= -L ${X11_LIBDIR} -lX11
-#LIBS= -L ${HOMEBREW_PREFIX}/lib -lSDL
+#LIBS= `${SDL2_CONFIG} --libs`
 
 # C compiler to use
 #
@@ -166,6 +166,7 @@ ENTRY= algmyr
 PROG= prog
 #
 OBJ= ${PROG}.o
+CSRC= ${PROG}.o
 DATA=
 TARGET= ${PROG}
 #
@@ -215,6 +216,7 @@ clean:
 
 clobber: clean
 	${RM} -f ${TARGET} ${ALT_TARGET}
+	${RM} -f out.raw
 	@-if [ -e sandwich ]; then \
 	    ${RM} -f sandwich; \
 	    echo 'ate sandwich'; \