message: docs: add instructions for self hosting
diff: @@ -37,6 +37,14 @@ npm install --save @sentry/react-native
  yarn add @sentry/react-native
  ```
  +If you are using a version of React Native <= 0.60.x link the package using `react-native`.
  +
  +```sh
  +react-native link @sentry/react-native
  +# OR, if self hosting
  +SENTRY_WIZARD_URL=http://sentry.acme.com/ react-native link @sentry/react-native
  +```
  +
  How to use it:
  ```javascript
  