Make sure README.md file is added to distribution archive
diff --git a/Makefile.am b/Makefile.am
index ac45873..b36d76e 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -2,5 +2,8 @@
 ACLOCAL_AMFLAGS = -I m4
 SUBDIRS = common src include tools docs
 
+EXTRA_DIST = \
+	README.md
+
 pkgconfigdir = $(libdir)/pkgconfig
 pkgconfig_DATA = libusbmuxd.pc