Add package-info.java for the Stream API / Print maven version on travis CI

.travis.yml

@@ -2,4 +2,5 @@ language: java
 jdk:
   - oraclejdk7
   - openjdk7
+before_install: 'mvn -version'
 

buffer/src/main/java/io/netty/buffer/stream/package-info.java

@@ -0,0 +1,20 @@
+/*
+ * Copyright 2012 The Netty Project
+ *
+ * The Netty Project licenses this file to you 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.
+ */
+
+/**
+ * Enables exchanging a very large stream between a producer and a consumer.
+ */
+package io.netty.buffer.stream;