Added basic documentation

README.md

@@ -1,2 +1,31 @@
-# Physical-Camera
-Unity Component that can describes a physical camera's attributes.
+# Unity's Physical-Camera
+<img align="right" src="Documents/camera.png">
+
+## Overview
+- A real world physical cameras model that can drive a standard Unity Camera object.
+
+## Objectives
+- Import and deliver proper lens/FOV/physical camera properties so Unity can be used in VFX and film pipelines.
+- Allow people from outside the game world like cinematographers to have a familiar interface.
+- Build the foundation for a proper cinematic camera component with appropriate connections to PostFX.
+
+
+## Usage
+- Import this package: [USDForUnity.unitypackage](https://github.com/Unity-Technologies/Physical-Camera/tree/master/Project/VFX-PhysicalCameras.unitypackage )  
+- In the scene select the game object that the camera to link with the Physical Camera and add component "Camera/Physical Camera"
+
+<img src="Documents/AddComponent.png">
+
+- Alternatively, you can drag and drop an existing physical camera prefab onto a camera object.
+
+<img src="Documents/drag.png">  
+
+## Notes
+- Many of the fields, at the moment, have no impact in Unity itself.
+- Should work with Unity 5.6 and up.
+- Work in progress.
+
+<img src="Documents/description.png">  
+
+## License
+[MIT](USDForUnity/Assets/StreamingAssets/USDForUnity/License.txt)