update docs for supporting Vue 3.0

Author: hunterliu1003

README.md

@@ -38,6 +38,22 @@ features:
 
 ## Install
 
+### Vue 3.0
+
+NPM:
+
+```bash
+npm install vue-final-modal@next --save
+```
+
+Yarn:
+
+```bash
+yarn add vue-final-modal@next
+```
+
+### Vue 2.x
+
 NPM:
 
 ```bash
@@ -55,7 +71,7 @@ yarn add vue-final-modal
 1. Import and register the modal component.
 
 ```js
-import { VueFinalModal } from 'vue-final-modal/lib'
+import { VueFinalModal } from 'vue-final-modal'
 
 export default {
   components: {

docs/content/en/index.md

@@ -43,6 +43,27 @@ If you need a highly customizable modal component for Vue.js, `Vue Final Modal`
 
 ## Installation
 
+### Vue 3.0
+
+<code-group>
+  <code-block label="Yarn" active>
+
+```bash
+yarn add vue-final-modal@next
+```
+
+  </code-block>
+  <code-block label="NPM">
+
+```bash
+npm install vue-final-modal@next
+```
+
+  </code-block>
+</code-group>
+
+### Vue 2.0
+
 <code-group>
   <code-block label="Yarn" active>
 
@@ -65,7 +86,7 @@ npm install vue-final-modal
 #### 1. Import and register the modal component.
 
 ```js
-import { VueFinalModal } from 'vue-final-modal/lib'
+import { VueFinalModal } from 'vue-final-modal'
 
 export default {
   components: {