Update README.md

README.md

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 **AR Collaborative** is a library for developing AR multiuser experiences or multiplayer games in Unity where people share the same physical space. A shared [AR Anchor](https://docs.unity3d.com/Packages/[email protected]/api/UnityEngine.XR.ARFoundation.ARAnchor.html) is placed based on photos of the environment, and state synchronisation occurs over LAN.
 
+**AR Collaborative** can be used in a variety of scenarios: as a testing environment for a multiuser app, requiring a quick setup, before implementing more complex solutions; as a complete alternative to such solutions; as a fallback solution when cross-platform support is needed or when an internet connection is not viable.
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 ## How it works
 
 -   The session host takes photos of flat objects on a surface and shares them with other users. These will become AR markers in the physical world.