Make sure README.md file is added to distribution archive
diff --git a/Makefile.am b/Makefile.am
index 7c28996..e6a4e94 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -2,3 +2,5 @@
 ACLOCAL_AMFLAGS = -I m4
 SUBDIRS = src man
 
+EXTRA_DIST = \
+	README.md