[release] 2.0.8

package.json

@@ -1,6 +1,6 @@
 {
   "name": "vant",
-  "version": "2.0.7",
+  "version": "2.0.8",
   "description": "Mobile UI Components built on Vue",
   "main": "lib/index.js",
   "module": "es/index.js",

src/collapse/README.md

@@ -71,6 +71,16 @@ export default {
 </van-collapse>
 ```
 
+``` javascript
+export default {
+  data() {
+    return {
+      activeNames: ['1']
+    };
+  }
+};
+```
+
 ## API
 
 ### Collapse Props

src/collapse/README.zh-CN.md

@@ -72,6 +72,16 @@ export default {
 </van-collapse>
 ```
 
+``` javascript
+export default {
+  data() {
+    return {
+      activeNames: ['1']
+    };
+  }
+};
+```
+
 ## API
 
 ### Collapse Props

src/index.ts

@@ -89,7 +89,7 @@ declare global {
   }
 }
 
-const version = '2.0.7';
+const version = '2.0.8';
 const components = [
   ActionSheet,
   AddressEdit,