updated README.md

f1b63a54 · lanrion · 5b0060fe · f1b63a54
Commit f1b63a54 authored Mar 27, 2014 by lanrion
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@@ -28,7 +28,11 @@ Or install it yourself as:

 ```ruby

+# new a client
 $client ||= WeixinAuthorize::Client.new(ENV["APPID"], ENV["APPSECRET"])
+
+# valid app_id and app_secret
+$client.is_valid? # return true or false
 ```

 ### Option: use [Redis](http://redis.io) to store your access_token (Recommend)