compatibility with VM

.idea/vcs.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$" vcs="Git" />
+  </component>
+</project>
\ No newline at end of file

world/default.sdf

@@ -11,7 +11,7 @@
         <plugin name='ignition::gazebo::systems::Contact' filename='ignition-gazebo-contact-system'/>
         <plugin name='ignition::gazebo::systems::Imu' filename='ignition-gazebo-imu-system'/>
         <plugin name='ignition::gazebo::systems::Sensors' filename='ignition-gazebo-sensors-system'>
-            <render_engine>ogre2</render_engine>
+            <render_engine>ogre</render_engine>
         </plugin>
         <gui fullscreen='false'>
             <plugin name='3D View' filename='GzScene3D'>