[librsvg] Makefile.am: Oops, list README.md in dist_doc_DATA

[Federico Mena Quintero <federico src gnome org>]

commit 0b98b376a56eec86b6a30ea0fbe16367ade3d17c
Author: Federico Mena Quintero <federico gnome org>
Date:   Mon Sep 11 10:25:19 2017 -0500

    Makefile.am: Oops, list README.md in dist_doc_DATA
    
    Since we renamed it to README.md, it wasn't automatically included in
    the dist tarball.

 Makefile.am |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/Makefile.am b/Makefile.am
index 5e71b38..7203bcf 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -220,6 +220,8 @@ if OS_WIN32
 rsvg_view_3_LDFLAGS += -mwindows
 endif # OS_WIN32
 
+dist_doc_DATA = README.md
+
 EXTRA_DIST =                           \
        $(RUST_SOURCES)                 \
        $(RUST_EXTRA)                   \