ZEPPELIN-1853. Add README for livy interpreter

docs/interpreter/livy.md

@@ -50,11 +50,6 @@ Example: `spark.master` to `livy.spark.master`
     <th>Default</th>
     <th>Description</th>
   </tr>
-  <tr>
-      <td>livy.spark.master</td>
-      <td>local[*]</td>
-      <td>Spark master uri. ex) spark://masterhost:7077</td>
-    </tr>
   <tr>
     <td>zeppelin.livy.url</td>
     <td>http://localhost:8998</td>
@@ -205,3 +200,7 @@ Edit `conf/spark-blacklist.conf` file in livy server and comment out `#spark.mas
 
 If you choose to work on livy in `apps/spark/java` directory in [https://github.com/cloudera/hue](https://github.com/cloudera/hue),
 copy `spark-user-configurable-options.template` to `spark-user-configurable-options.conf` file in livy server and comment out `#spark.master`. 
+
+## Upgrade
+
+* We remove livy.spark.master in zeppelin-0.7. Because we sugguest user to use livy 0.3 in zeppelin-0.7. And livy 0.3 don't allow to specify livy.spark.master, it enfornce yarn-cluster mode.

livy/README.md

@@ -0,0 +1,17 @@
+# Overview
+Livy interpreter for Apache Zeppelin
+
+# Pre requisities
+You can follow the instructions at [Livy Quick Start](http://livy.io/quickstart.html) to set up livy.
+
+# Run Integration Tests
+You can add integration test to [LivyInterpreter.java](https://github.com/apache/zeppelin/blob/master/livy/src/test/java/org/apache/zeppelin/livy/LivyInterpreterIT.java)
+Either you can run the integration test on travis where enviroment will be setup or you can run it in local. You need to download livy-0.2 and spark-1.5.2 to local, then use the following
+script to run the integration test.
+
+```bash
+#!/usr/bin/env bash
+export LIVY_HOME=<path_of_livy_0.2.0>
+export SPARK_HOME=<path_of_spark-1.5.2>
+mvn clean verify -pl livy -DfailIfNoTests=false -DskipRat
+```