Update README.md

README.md

@@ -396,6 +396,8 @@ Most configuration fields are named such that they can be defaulted to falsey. A
 | featureOptIn <br/><sub>since 3.0.3</sub> | IFeatureOptIn | undefined | [Optional]  Set Feature opt in details. |
 | throttleMgrCfg <br/><sub>since 3.0.3</sub> | `{[key: number]: IThrottleMgrConfig}` | undefined | [Optional]  Set throttle mgr configuration by key. |
 | retryCodes | number[] | undefined | Identifies the status codes that will cause event batches to be resent, when `null` or `undefined` the SDK will use it's defaults `[401, 408, 429, 500, 502, 503, 504]`. `403` was removed in version 3.1.1. |
+| expCfg | [`IExceptionConfig`](https://github.com/microsoft/ApplicationInsights-JS/blob/main/shared/AppInsightsCommon/src/Interfaces/IExceptionTelemetry.ts) | undefined | Set additional configuration for exceptions, such as more scripts to include in the exception telemetry. |
+
 
 ### ExtensionConfig