[gnome-calculator] Added myself as a maintainer

[Robert Roth <robertroth src gnome org>]

commit 9cf3e7445ae79df3b0ae14aa72e8a63d2d535ab8
Author: Robert Roth <robert roth off gmail com>
Date:   Tue Feb 7 00:12:21 2017 +0200

    Added myself as a maintainer

 gnome-calculator.doap |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)
---
diff --git a/gnome-calculator.doap b/gnome-calculator.doap
index 73cd7ce..8b9c3f7 100644
--- a/gnome-calculator.doap
+++ b/gnome-calculator.doap
@@ -28,4 +28,11 @@
       <gnome:userid>arthpatel</gnome:userid>
     </foaf:Person>
   </maintainer>
+  <maintainer>
+    <foaf:Person>
+      <foaf:name>Robert Roth</foaf:name>
+      <foaf:mbox rdf:resource="mailto:robert roth off gmail com" />
+      <gnome:userid>robertroth</gnome:userid>
+    </foaf:Person>
+  </maintainer>
 </Project>