#35 Added an md so i dont remember how to launch lmao

ros2_ws/ros2.md

@@ -0,0 +1,29 @@
+# ROS2 Quick Start
+
+## File structure
+
+- ros2_ws
+   - package1
+   - package2
+
+
+## To craete changes
+1. Make a change
+2. Colcon build
+3. Source the package?
+
+## To launch a package
+
+1. Build the package -> 
+Note: from ws level
+colcon build
+colcon build --packages-select <package_name>
+
+2. Source ros2 installation and package setup file:
+Note: from ws level
+. install/setup.bash
+
+3. run launch file
+Note: you can either launch at workspace level or in the launch folder
+ros2 launch <launch_file_name>
+ros2 launch <package_name> <launch_file_name>