[gnome-builder] doap: use xml header

[Christian Hergert <chergert src gnome org>]

commit d1794497ec8591359945de5f4594c1af16b69d72
Author: Christian Hergert <christian hergert me>
Date:   Thu May 14 03:12:13 2015 -0700

    doap: use xml header

 gnome-builder.doap |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/gnome-builder.doap b/gnome-builder.doap
index ba8f150..a9aecd8 100644
--- a/gnome-builder.doap
+++ b/gnome-builder.doap
@@ -1,3 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
 <Project xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#";
          xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#";
          xmlns:foaf="http://xmlns.com/foaf/0.1/";