fix insight response parsing with from/to are used

lib/blockchainexplorers/insight.js

@@ -87,6 +87,10 @@ Insight.prototype.getTransactions = function(addresses, from, to, cb) {
 
   request(args, function(err, res, txs) {
     if (err || res.statusCode != 200) return cb(err || res);
+
+    if (_.isObject(txs) && txs.items)
+      txs = txs.items;
+
     // NOTE: Whenever Insight breaks communication with bitcoind, it returns invalid data but no error code.
     if (!_.isArray(txs) || (txs.length != _.compact(txs).length)) return cb(new Error('Could not retrieve transactions from blockchain. Request was:' + JSON.stringify(args)));