diff --git a/README.md b/README.md
index 1fe0037..a9912bd 100644
--- a/README.md
+++ b/README.md
@@ -35,7 +35,7 @@ const wx = new Wechat(wechatConfig);
 
 ## Wechat Config
 
-Required `wechatConfig` info:  
+`wechatConfig` info:  
 
 ```
 {
@@ -170,12 +170,14 @@ router.get('/oauth-callback', function (req, res) {
 
 ## Cards and Offers
 
-Set `card: true` in config to enable the cards support on server side, see [demo](#demo).
+Set `card: true` in config to enable the cards support on server side, see [demo](#demo).  
+For cards APIs, see [cards apis](https://github.com/JasonBoy/wechat-jssdk/wiki/API#cards)
 
 ## Payment
 
 Set `payment: true` in config to enable the payment support on server side, you should also provide payment related info.  
-See [demo](#demo).
+See [demo](#demo).  
+For payment APIs, see [payment apis](https://github.com/JasonBoy/wechat-jssdk/wiki/API#payment)
 
 ## Using Stores
 
diff --git a/package.json b/package.json
index 1dc8795..dcadb59 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "wechat-jssdk",
-  "version": "3.1.0-alpha.4",
+  "version": "3.1.0-rc.0",
   "description": "Next-Generation WeChat JS-SDK integration with NodeJS",
   "main": "./lib/index.js",
   "engines": {