update readme and example to new api

Author: vvo

README.md

@@ -137,6 +137,8 @@ Dialogue: 0,0:00:02.50,0:00:03.97,Default,,0,0,0,,{\fnLiberation Sans\fs40}Okay,
 Dialogue: 0,0:00:05.00,0:00:06.90,Default,,0,0,0,,{\fnLiberation Sans\fs40}Okay. Okay.
 ```
 
+Result extracting a GIF from [22 Jump Street](http://www.imdb.com/title/tt2294449/):
+
 ![22](22.gif)
 
 ## GIF Performance

example/index.js

@@ -8,21 +8,14 @@ var output = path.join(__dirname, 'movie.gif');
 var gif = fs.createWriteStream(output);
 
 var options = {
-  resize: '200:-1',
+  resize: '500:-1',
   from: 30,
   to: 35,
   subtitles: path.join(__dirname, 'movie.ass')
 };
 
-gifify(input, options, function done(err, gifReadStream) {
-  if (err) {
-    console.error(err);
-    return;
-  }
+gifify(input, options).pipe(gif);
 
-  gifReadStream.pipe(gif);
-
-  gif.on('close', function end() {
-    console.log('gifified ' + input + ' to ' + output);
-  });
+gif.on('close', function end() {
+  console.log('gifified ' + input + ' to ' + output);
 });