Merge pull request #125 from ipy/develop

修正 pfop 预转文档中的一处错误，并添加 pipeline 参数

Author: longbai

docs/README.md

@@ -540,7 +540,7 @@ func pfop(bucketName, keyName, fops, opts, callback);
 
 // 例子
 // pfop
-      qiniu.fop.pfop(TEST_BUCKET, keys[0], 'avinfo', {notifyUrl: 'www.test.com', force: true}, function(err, ret) {
+      qiniu.fop.pfop(TEST_BUCKET, keys[0], 'avinfo', {notifyURL: 'www.test.com', force: true}, function(err, ret) {
         ret.should.have.keys('persistentId');
         done();
       });

qiniu/fop.js

@@ -70,6 +70,9 @@ function pfop(bucket, key, fops, opts, onret) {
   if (opts.force) {
     param.force = 1;
   }
+  if (opts.pipeline) {
+    param.pipeline = opts.pipeline;
+  }
 
   var uri = 'http://api.qiniu.com/pfop/';
   var body = querystring.stringify(param);