Alipay(Alibaba Inc.) Gateways for Omnipay

==support the following gateways==

* Alipay_Express (Alipay Express Checkout)  支付宝即时到账接口

* Alipay_Secured (Alipay Secured Checkout) 支付宝担保交易接口

* Alipay_Dual (Alipay Dual Function Checkout) 支付宝双功能交易接口

* Alipay_WapExpress (Alipay Wap Express Checkout) 支付宝WAP客户端接口

* Alipay_MobileExpress (Alipay Wap Mobile Express Checkout) 支付宝iOS,Android等Native客户端的服务端接口

* Alipay_Bank (Alipay Bank Checkout) 支付宝银行快捷通道接口