chore: add note about vite integration (#87)

Co-authored-by: Kia King Ishii <[email protected]>

Author: Zenthae

README.md

@@ -1,5 +1,16 @@
 # vuex-orm-next [![Unit Test](https://github.com/vuex-orm/vuex-orm-next/workflows/Unit%20Test/badge.svg)](https://github.com/vuex-orm/vuex-orm-next/actions) [![Build](https://github.com/vuex-orm/vuex-orm-next/workflows/Build/badge.svg)](https://github.com/vuex-orm/vuex-orm-next/actions) [![codecov](https://codecov.io/gh/vuex-orm/vuex-orm-next/branch/master/graph/badge.svg)](https://codecov.io/gh/vuex-orm/vuex-orm-next)
 
+## Important !
+
+Be sure to disable `useDefineForClassFields` when using `[email protected]+` else `vuex-orm` won't work anymore ! [#4636](https://github.com/vitejs/vite/issues/4636)
+
+`tsconfig.json`
+```json
+...
+"useDefineForClassFields": false,
+...
+```
+
 ## Status: Draft
 
 This repo is for the next iteration of Vuex ORM. It’s in an active development state and we are hoping it is going to be the foundation of the version 1.0.0 release. Any and all feedback is welcome!
@@ -8,6 +19,17 @@ In addition, new documentation is ongoing and can be found at https://next.vuex-
 
 Join us on our [Slack Channel](https://join.slack.com/t/vuex-orm/shared_invite/enQtNDQ0NjE3NTgyOTY2LTc1YTI2N2FjMGRlNGNmMzBkMGZlMmYxOTgzYzkzZDM2OTQ3OGExZDRkN2FmMGQ1MGJlOWM1NjU0MmRiN2VhYzQ) for any questions and discussions.
 
+## Vite Integration
+
+Make sure to disable `useDefineForClassFields` in `tsconfig.json` when using `vite >= 2.5.0`. See [this issue](https://github.com/vitejs/vite/issues/4636) for more details.
+
+```json
+...
+"useDefineForClassFields": false,
+...
+```
+
+
 ## Contribution
 
 Community contributions will be applicable as soon as this repo reaches **alpha** stage.