add log to derive

lib/model/wallet.js

@@ -2,6 +2,7 @@
 
 var _ = require('lodash');
 var util = require('util');
+var log = require('npmlog');
 var $ = require('preconditions').singleton();
 var Uuid = require('uuid');
 
@@ -156,6 +157,7 @@ Wallet.prototype.createAddress = function(isChange) {
   var self = this;
 
   var path = this.addressManager.getNewAddressPath(isChange);
+  log.verbose('Deriving addr:' + path);
   var address = Address.derive(self.id, this.addressType, this.publicKeyRing, path, this.m, this.coin, this.network, isChange);
   return address;
 };

lib/server.js

@@ -3210,6 +3210,7 @@ WalletService.prototype.scan = function(opts, cb) {
     var gap = Defaults.SCAN_ADDRESS_GAP;
 
     async.whilst(function() {
+      log.debug('Scanning addr gap:'+ inactiveCounter);
       return inactiveCounter < gap;
     }, function(next) {
       var address = derivator.derive();