Rx7 readme (#144)

Co-authored-by: wangxiao <[email protected]>

Author: regou

Diff for: README-CN.md

@@ -2,11 +2,11 @@
 
 [English](README.md) | 简体中文
 
-将 [RxJS v6](https://github.com/ReactiveX/rxjs) 集成到 Vue.js。
+将 [RxJS v6+](https://github.com/ReactiveX/rxjs) 集成到 Vue.js。
 
 > **相比 5.0 的不兼容变更**
 >
-> - vue-rx v6 现在默认只对 RxJS V6 生效。如果你想继续使用 RxJS v5 风格的代码，安装 `rxjs-compat`。
+> - vue-rx v6 现在默认只对 RxJS V6+ 生效。如果你想继续使用 RxJS v5 风格的代码，安装 `rxjs-compat`。
 
 ### 安装
 

Diff for: README.md

@@ -2,10 +2,10 @@
 
 English | [简体中文](README-CN.md)
 
-[RxJS v6](https://github.com/ReactiveX/rxjs) integration for Vue.js.
+[RxJS v6+](https://github.com/ReactiveX/rxjs) integration for Vue.js.
 
 > **BREAKING CHANGES from 5.0**
-> - vue-rx v6 now only works with RxJS v6 by default. If you want to keep using RxJS v5 style code, install `rxjs-compat`.
+> - vue-rx v6 now only works with RxJS v6+ by default. If you want to keep using RxJS v5 style code, install `rxjs-compat`.
 
 ### Installation