use payment_configs/ as configDir for the pay.js

Author: hackmod

pay.js

@@ -86,7 +86,7 @@ if (cluster.isWorker){
 //Read all pool configs from pool_configs and join them with their coin profile
 var buildPoolConfigs = function(){
     var configs = {};
-    var configDir = 'pool_configs/';
+    var configDir = 'payment_configs/';
 
     var poolConfigFiles = [];