Hi All---
I have been new to ROS and Gazebo and have been trying to get the hands on the turtle bot in Gazebo simulator.
I am using Ubuntu 14.04 version and ROS--Indigo and I have followed [this](http://wiki.ros.org/turtlebot_gazebo/Tutorials/indigo/Gazebo%20Bringup%20Guide) tutorial to bring up the Turtle bot in the world describe in the the same link. However, I am not able to get the same world; infact I am only getting a blank world. Moroever, I got the following warning
jashanvir@jashanvir-Dell-System-XPS-L502X:~$ roslaunch turtlebot_gazebo turtlebot_world.launch
... logging to /home/jashanvir/.ros/log/68c77ab0-7d9e-11e6-8601-88532e0c5102/roslaunch-jashanvir-Dell-System-XPS-L502X-19685.log
Checking log directory for disk usage. This may take awhile.
Press Ctrl-C to interrupt
Done checking log file disk usage. Usage is <1GB.
started roslaunch server http://jashanvir-Dell-System-XPS-L502X:39528/
SUMMARY
========
PARAMETERS
* /bumper2pointcloud/pointcloud_radius: 0.24
* /cmd_vel_mux/yaml_cfg_file: /opt/ros/indigo/s...
* /depthimage_to_laserscan/output_frame_id: /camera_depth_frame
* /depthimage_to_laserscan/range_min: 0.45
* /depthimage_to_laserscan/scan_height: 10
* /robot_description:
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