Attached read me

Author: nvikramraj

launch/README.md

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 Contains launch scripts for use in the standard executor, e.g., `python main.py launch/fixed_route_sim.yaml`.
+
+
+# Gazebo Simulation Guide lines
+
+## Gazebo Simulation Setup
+
+Head over here to setup gazebo docker container to run the simulation
+
+
+## Running GEM Stack with Gazebo
+
+- Open two terminals
+- Launch the Gazebo simulator in the first terminal
+- In the other terminal navigate to GEM Stack folder and run the following command to launch GEM Stack
+
+```
+Sample command:
+
+python3 main.py --variant=sim --vehicle=e4_gazebo launch/gazebo_simulation.yaml
+
+
+Other variants:
+
+python3 main.py --variant={variant_name} --vehicle={vehicle_name} launch/gazebo_simulation.yaml
+
+Variants:
+sim
+
+Vehicle types:
+
+e2
+e4
+e2_gazebo
+e4_gazebo
+
+```
+
+- The gazebo_simulation.yaml can be editied to add your planning and perception code, more variants can be added on request.