:alien: add global paramer - `merchant: "angelbell"`

src/util/API/AJAXHelper.js

@@ -62,6 +62,7 @@ class AJAXHelper {
 		xmlHttpReq.setRequestHeader('uid', uid);
 		xmlHttpReq.setRequestHeader('sign', sign);
 		xmlHttpReq.setRequestHeader('terminal', platform);
+		xmlHttpReq.setRequestHeader('merchant', 'angelbell');
 		xmlHttpReq.setRequestHeader('requestId', requestId);
 		xmlHttpReq.setRequestHeader('Authentication', sign); //header中增加Authentication以兼容老版本
 		xmlHttpReq.setRequestHeader('Content-Type', 'application/' + (method == 'POST' || method == 'PUT' ? 'json' : 'text'));