Blender Texture Atlas baked with cycles in 75 seconds

Everything is explained in the video... Mic is not working, so no audio in this clip.I have given the detailed explanation below.Comment below if you have any query. Models in cycles renderer.All the light effects will be baked in texture atlas. 1)Select Objects in object view. 2)Go to texture atlas and hit on "+".Change the Name.hit Ok. 3)Press "Select Group button" 4)Press "Start Manual Unwrap button". Select Texture Atlas image in UV view. 5)Go to Object view.Select objects and press "U".Smart unwrap. 6)Add node in each material.Select "Texture Atlas" image.Make sure all objects are applied with texture Atlas image. 7)Press "Bake" button. 8)Press "Finish Manual Unwrap" button. 9)Texture Atlas image is ready now.You can save image by pressing F3. P.S - Blend file can be directly used in Unity.Just copy blend file and image to unity Folder. Check Swap UVs and apply. Drag Blend file to hierarchy.and apply Texture Atlas image.(Same procedure for fbx file.)