How to download and setup turtlebot3_simulations
Open terminal and run command
                                            git clone https://github.com/ROBOTIS-GIT/turtlebot3_simulations.git
                                        
                                        git clone is used to create a copy or clone of turtlebot3_simulations repositories.
                                        You pass git clone a repository URL. it supports a few different network protocols and corresponding URL formats.
Also you may download zip file with turtlebot3_simulations https://github.com/ROBOTIS-GIT/turtlebot3_simulations/archive/master.zip
Or simply clone turtlebot3_simulations with SSH
                                            [email protected]:ROBOTIS-GIT/turtlebot3_simulations.git                                    
                                    If you have some problems with turtlebot3_simulations
You may open issue on turtlebot3_simulations support forum (system) here: https://github.com/ROBOTIS-GIT/turtlebot3_simulations/issuesSimilar to turtlebot3_simulations repositories
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