add README.md to dist
diff --git a/Makefile b/Makefile
index 1efab49..2c5f4e9 100644
--- a/Makefile
+++ b/Makefile
@@ -41,7 +41,7 @@ DISTDIR = ${PROG}-${VER}
DIST = ${DISTDIR}.tar.gz
dist: ${DIST}
-DISTFILES = ${SRCS} ${PROG}.1 Makefile
+DISTFILES = ${SRCS} ${PROG}.1 README.md Makefile
${DIST}: ${DISTFILES}
mkdir ${PROG}-${VER}