README.md in alipay-0.6.0 vs README.md in alipay-0.7.0

@@ -7,11 +7,11 @@
 ## Installation
 
 Add this line to your application's Gemfile:
 
 ```ruby
-gem 'alipay', '~> 0.6.0'
+gem 'alipay', '~> 0.7.0'
 ```
 
 And then execute:
 
 ```console
@@ -21,11 +21,10 @@
 ## Configuration
 
 ```ruby
 Alipay.pid = 'YOUR_PID'
 Alipay.key = 'YOUR_KEY'
-Alipay.seller_email = 'YOUR_SELLER_EMAIL'
 
 #Alipay.sign_type = 'MD5' # Available values: MD5, RSA. Default is MD5
 #Alipay.debug_mode = true # Enable parameter check. Default is true.
 ```
 
@@ -36,11 +35,10 @@
   out_trade_no: 'OUT_TRADE_NO',
   # Order params...
 }, {
   pid: 'ANOTHER_PID',
   key: 'ANOTHER_KEY',
-  seller_email: 'ANOTHER_SELLER_EMAIL'
 })
 ```
 
 ## Service
 
@@ -443,10 +441,11 @@
 #### Example
 
 ```ruby
 token = Alipay::Wap::Service.trade_create_direct_token(
   req_data: {
+    seller_account_name: '[e-mail]',
     out_trade_no: '20150401000-0001',
     subject: 'Subject',
     total_fee: '10.0',
     call_back_url: 'https://example.com/orders/20150401000-0001',
     notify_url: 'https://example.com/orders/20150401000-0001/notify'
@@ -462,9 +461,10 @@
 
 ##### req_data ARGUMENTS
 
 | Key | Requirement | Description |
 | --- | ----------- | ----------- |
+| seller_account_name | required | Alipay seller account. |
 | out_order_no | required | Order id in your application. |
 | subject | required | Order subject. |
 | total_fee | required | Order total price. |
 | return_url | optional | Redirect customer to this url after payment. |
 | notify_url | optional | Alipay asyn notify url. |