Added the package dependencies.

package.xml

@@ -49,7 +49,8 @@
   <!-- Use doc_depend for packages you need only for building documentation: -->
   <!--   <doc_depend>doxygen</doc_depend> -->
   <buildtool_depend>catkin</buildtool_depend>
-
+  <depend>hector_gazebo_plugins</depend>
+  <depend>iri_microstrain_imu_description</depend>
 
   <!-- The export tag contains other, unspecified, tags -->
   <export>