The initial orientation of rviz doesn't match Gazebo's initial camera view #179
Description
This makes it confusing to view and spot the difference in orientation, since the new default turtlebot3-world is so symmetric. You have to notice that gazebo shows 3 posts beyond the origin, and figure out that the indentations on the rviz map are rotated relative to gazebo and therefore the initial 2D Pose in rviz is rotated relative to gazebo.