Update README.md (#25)

Author: 0xFirekeeper

README.md

@@ -24,14 +24,18 @@ Head over to the [releases](https://github.com/thirdweb-dev/unity-sdk/releases)
 
 Drag and drop the file into your project.
 
-The package comes with a sample Scene showcasing the different capabilities of the SDK.
+The package comes with a sample Scene and Prefab examples showcasing the different capabilities of the SDK.
+
+Note: you may need to install the [Newtonsoft.Json](https://github.com/jilleJr/Newtonsoft.Json-for-Unity/wiki/Install-official-via-UPM) package manually if you experience importing errors on different Unity versions.
 
 # Build
 
 - Open your `Build settings`, select `WebGL` as the target platform.
 - Open `Player settings` > `Resolution and Presentation` and under `WebGLTemplate` choose `Thirdweb`.
 - Save and click `Build and Run` to test out your game in a browser.
 
+If you're uploading your build, set `Compression Format` to `Disabled` in `Player Settings` > `Publishing Settings`.
+
 Note that in order to communicate with the SDK, you need to `Build and run` your project so it runs in a browser context.
 
 #### _**Interacting with the SDK within the Unity Editor is NOT supported.**_
@@ -103,6 +107,7 @@ nftPrefabScript.LoadNFT(nft);
 [Events](https://github.com/thirdweb-dev/unity-sdk/blob/main/Assets/Thirdweb/Examples/Scripts/Prefabs/Prefab_Events.cs) - Fetch and manipulate Contract Events with a simple API!
 - Get specific events from any contract.
 - Get all events from any contract.
+- Event listener support with callback actions.
 - Optional query filters.
 
 See full documentation on the [thirdweb portal](https://portal.thirdweb.com).