Merge pull request #478 from isocolsky/fix/address-index

Fix index for address query

lib/storage.js

@@ -50,7 +50,8 @@ Storage.prototype._createIndexes = function() {
     id: 1,
   });
   this.db.collection(collections.ADDRESSES).createIndex({
-    walletId: 1
+    walletId: 1,
+    createdOn: 1,
   });
   this.db.collection(collections.ADDRESSES).createIndex({
     address: 1,
@@ -63,6 +64,11 @@ Storage.prototype._createIndexes = function() {
     type: 1,
     key: 1,
   });
+
+
+  this.db.collection(collections.ADDRESSES).dropIndex({
+    walletId: 1
+  });
 };
 
 Storage.prototype.connect = function(opts, cb) {