README.md in alipay-0.6.0.beta3 vs README.md in alipay-0.6.0

@@ -2,26 +2,18 @@
 
 A unofficial alipay ruby gem.
 
 Alipay official document: https://b.alipay.com/order/techService.htm .
 
-Master branch(v0.6.0) is in develop, checkout [v0.5.0](https://github.com/chloerei/alipay/tree/v0.5.0) if you want to use in production.
-
 ## Installation
 
 Add this line to your application's Gemfile:
 
 ```ruby
-gem 'alipay', '~> 0.6.0.beta3'
+gem 'alipay', '~> 0.6.0'
 ```
 
-or master branch:
-
-```ruby
-gem 'alipay', github: 'chloerei/alipay'
-```
-
 And then execute:
 
 ```console
 $ bundle
 ```
@@ -365,9 +357,49 @@
 | currency | required | Abbreviated currency name. |
 | reason | required | Refun reason. |
 | gmt_return | required * | YYYYMMDDHHMMSS Beijing Time. |
 
 \* Auto set Time.now if not set.
+
+### 快捷支付(无线)
+
+#### Name
+
+```ruby
+mobile.securitypay.pay
+```
+
+#### Definition
+
+```ruby
+Alipay::Service.mobile_security_pay_url({ARGUMENTS}, {OPTIONS})
+```
+
+#### Example
+
+```ruby
+Alipay::Service.mobile_security_pay_url(
+  out_trade_no: '20150401000-0001',
+  notify_url: 'https://example.com/orders/20150401000-0001/notify'
+  subject: 'subject',
+  total_fee: '10.00',
+  body: 'text'
+)
+```
+
+#### ARGUMENTS
+
+| Key | Requirement | Description |
+| --- | ----------- | ----------- |
+| out_trade_no | required | Order number in your application. |
+| notify_url | required | Alipay asyn notify url. |
+| subject | required | Order subject. |
+| total_fee | required | Order total price. |
+| body | required | Order body, less than 512 bytes. |
+
+\* This service only support RSA sign_type.
+
+This is not a complete list of arguments, please read official document: http://download.alipay.com/public/api/base/WS_MOBILE_PAY_SDK_BASE.zip .
 
 ### 验证通知
 
 #### Name