feat(benchmarks): add incredibly simple baseline benchmark tool

test/benchmarks/simple.js

@@ -0,0 +1,32 @@
+'use strict';
+var AMQPClient = require('../../lib').Client;
+
+var client = new AMQPClient(),
+    messageCount = parseInt(process.argv[2]) || 10,
+    server = process.env.SERVER || 'localhost',
+    receivedCount = 0,
+    start, finish;
+
+client.connect('amqp://' + server)
+  .then(function() {
+    return Promise.all([
+      client.createReceiver('amq.topic'),
+      client.createSender('amq.topic')
+    ]);
+  })
+  .spread(function(receiver, sender) {
+    receiver.on('message', function(message) {
+      receivedCount++;
+      if (receivedCount === messageCount) {
+        finish = new Date();
+        console.log('=> sent ' + messageCount + ' messages in ' + (finish.getTime() - start.getTime()) + 'ms');
+        process.exit(0);
+      }
+    });
+
+    start = new Date();
+    var promises = [];
+    for (var i = 0; i < messageCount; i++)
+      promises.push(sender.send('test'));
+    return Promise.all(promises);
+  });