Adds proxy example

examples/README.md

@@ -3,14 +3,13 @@
 * Tweet
 * Search
 * [Streams](#streaming)
-* Proxy
+* [Proxy](#proxy)
 * Media
 * Authentication
 
-## Streaming
+## Streams
 
 ```javascript
-
 var Twitter = require('../lib/twitter');
 
 var client = new Twitter({
@@ -34,3 +33,30 @@ client.stream('statuses/filter', {track: 'twitter'},  function(stream){
   });
 });
 ```
+
+## Proxy
+
+To make requests behind a proxy, you must pass the proxy location through to the request object.  This is done by adding a `request_options` object to the configuration object.
+
+```javascript
+var Twitter = require('../lib/twitter');
+
+var client = new Twitter({
+  consumer_key: process.env.TWITTER_CONSUMER_KEY,
+  consumer_secret: process.env.TWITTER_CONSUMER_SECRET,
+  access_token_key: process.env.TWITTER_ACCESS_TOKEN_KEY,
+  access_token_secret: process.env.TWITTER_ACCESS_TOKEN_SECRET,
+  request_options: {
+    proxy: 'http://myproxyserver.com:1234'
+  }
+});
+
+/**
+ * Grab a list of favorited tweets
+ **/
+client.get('favorites/list', function(error, tweets, response){
+  if (!error) {
+    console.log(tweets);
+  }
+});
+```