Update README.md

modify the useage of function Read().

README.md

@@ -23,9 +23,8 @@ Parse with Go bind-api
 ```go
 import "github.com/json-iterator/go"
 iter := jsoniter.ParseString(`[0,1,2,3]`)
-val := []int{}
-iter.Read(&val)
-fmt.Println(val[3])
+var := iter.Read()
+fmt.Println(val)
 ```
 
 # Iterator-API for quick extraction
@@ -66,4 +65,4 @@ go get github.com/json-iterator/go
 
 # Contribution Welcomed !
 
-Report issue or pull request, or email taowen@gmail.com, or [![Gitter chat](https://badges.gitter.im/gitterHQ/gitter.png)](https://gitter.im/json-iterator/Lobby)
+Report issue or pull request, or email taowen@gmail.com, or [![Gitter chat](https://badges.gitter.im/gitterHQ/gitter.png)](https://gitter.im/json-iterator/Lobby)