Added contributing file (#3)

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+<!--
+Licensed to the Apache Software Foundation (ASF) under one or more
+contributor license agreements.  See the NOTICE file distributed with
+this work for additional information regarding copyright ownership.
+The ASF 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.
+-->
+
+# Contributing to Fluo Bytes
+
+See [How to Contribute][contribute] for general instructions on contributing to any Fluo project.
+
+## Building Fluo Bytes
+
+If you have [Git], [Maven], and [Java][java] (version 8+) installed, run these commands to build
+Fluo Bytes:
+
+    git clone https://github.com/apache/fluo-bytes.git
+    cd fluo-bytes
+    mvn package
+
+## Pull Request
+
+Before making a pull request please attempt to run `mvn verify`.  If it fails and you are not sure 
+why, it's OK to go ahead make the pull request with a comment about the failure.
+
+[Git]: http://git-scm.com/
+[java]: http://openjdk.java.net/
+[Maven]: http://maven.apache.org/
+[contribute]: https://fluo.apache.org/how-to-contribute/