Update minioapi documentation

pkg/api/minioapi/response.go

@@ -1,9 +1,36 @@
+/*
+ * Mini Object Storage, (C) 2015 Minio, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package minioapi
 
 import (
 	mstorage "github.com/minio-io/minio/pkg/storage"
 )
 
+// Reply date format
+const (
+	dateFormat = "2006-01-02T15:04:05.000Z"
+)
+
+// takes an array of Bucketmetadata information for serialization
+// input:
+// array of bucket metadata
+//
+// output:
+// populated struct that can be serialized to match xml and json api spec output
 func generateBucketsListResult(buckets []mstorage.BucketMetadata) BucketListResponse {
 	var listbuckets []*Bucket
 	var data = BucketListResponse{}