Update README.md

README.md

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 <img src="assets/images/title.png">
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 ### What is F1/10 Autonomous Racing?
 
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 ### The F1/10 simulator
 
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 The F1/10 simulator is based on the work done by the MIT-Racecar team with some added features like the new world map and Gazebo plugins that provide better odometry and control. Bring up the simulator using the following command.
 ```console
 user@computer:$ roslaunch racecar_gazebo racecar.launch
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 ### Tutorial 1: Basic navigation principles (follow the inner wall)
 
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 The purpose of this demonstration is to show the basic capabilities of the F1/10 platform. If you already have the assembled F1/10 hardware, you can skip the first part and proceed directly to the second part. You may need to tune some basic parameters in the controller depending on the kind of chassis you are using.
 
 First, bring up the simulator using the following command. This command launches the simulator and spawns the F1/10 racecar closer to the inner wall for better performance of the wall-following algorithm.
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 ### Tutorial 2: Mapping a closed environment using Hector Mapping
 
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 It is important that you do not have multiple installations of hector_slam package. ROS will not build multiple packages with the same name, but sometimes it can overlook existing installations if your workspace is not sourced.
 
 Before we proceed to mapping, we have to make some changes to the hector_slam launch files to make it work with the F1/10 package. To do this execute the following:
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 ### Tutorial 3: Advanced navigation using the TEB local planner
 
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 ```console
 user@computer:$ roslaunch racecar_gazebo racecar.launch
 ```