doc(README.md) cookie example added

README.md

@@ -203,6 +203,23 @@ describe('request.agent(app)', function() {
 })
 ```
   There is another example that is introduced by the file [agency.js](https://github.com/visionmedia/superagent/blob/master/test/node/agency.js)
+
+  Here is an example where 2 cookies are set on the request.
+
+ ```js
+  agent(app)
+    .get('/api/content')
+    .set('Cookie', ['nameOne=valueOne;nameTwo=valueTwo'])
+    .send()
+    .expect(200)
+    .end((err, res) => {
+      if (err) {
+        return done(err);
+      }
+      expect(res.text).to.be.equal('hey');
+      return done();
+    });
+```
 
 ## API