[devhelp] build: distribute devhelp.doap in tarballs

[Sébastien Wilmet <swilmet src gnome org>]

commit 21a16e1940aca2c0e7eccd028b9baa2b63a22e42
Author: Sébastien Wilmet <swilmet gnome org>
Date:   Sat Mar 11 16:17:22 2017 +0100

    build: distribute devhelp.doap in tarballs
    
    It contains useful information.

 Makefile.am |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/Makefile.am b/Makefile.am
index fec781d..dd696db 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -4,3 +4,5 @@ AM_DISTCHECK_CONFIGURE_FLAGS =  \
        --enable-gtk-doc        \
        --enable-introspection  \
        --enable-appstream-util
+
+EXTRA_DIST = devhelp.doap