Update maintainer email (#148)

Signed-off-by: Carlos Agüero <caguero@openrobotics.org>
(cherry picked from commit 71d4480)

Author: caguero

README.md

@@ -1,6 +1,6 @@
 # Gazebo tools: Gazebo entry point for using all the suite of Gazebo tools
 
-**Maintainer:** caguero AT openrobotics DOT org
+**Maintainer:** caguero AT honurobotics DOT com
 
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