add params to express

lib/expressapp.js

@@ -261,7 +261,12 @@ ExpressApp.start = function(opts) {
 
   router.get('/v1/txhistory/', function(req, res) {
     getServerWithAuth(req, res, function(server) {
-      server.getTxHistory({}, function(err, txs) {
+      var opts = {};
+      if (req.param['minTs']) opts.minTs = req.params['minTs'];
+      if (req.param['maxTs']) opts.maxTs = req.params['maxTs'];
+      if (req.param['limit']) opts.limit = req.params['limit'];
+
+      server.getTxHistory(opts, function(err, txs) {
         if (err) return returnError(err, res, req);
         res.json(txs);
         res.end();