Add Spark README (installation and usage)

TSpark/README.rst

@@ -0,0 +1,49 @@
+====
+Spark
+====
+
+.. contents:: **Table of Contents**
+
+How to install Spark: JDK and Spark
+====
+
+You first need the Java Development Kit (JDK). Be aware that Spark is not
+running with the latest JDK (9), so you need JDK 8 or earlier. You can
+download the JDK from Oracle web site, and follow instruction. Once installed,
+check it works by just typing in the terminal:
+
+::
+
+  java -version
+
+If you have several java versions installed, you can set it using
+
+::
+
+   export JAVA_HOME=`/path/to/java_home -v <version number>`
+
+Once JDK is installed (again JDK 8 or earlier), you can install Spark.
+The easiest and cleanest way is via pip
+
+::
+
+  pip install pyspark
+
+Alternatively, you can `download <https://spark.apache.org/downloads.html>`_
+Spark and link it (or use you favourite package installer).
+You can test Spark by launching it interactively
+
+::
+
+  pyspark # python
+
+or
+
+::
+
+  spark-shell # scala
+
+How to use Spark: basics
+====
+
+See `here <http://spark.apache.org/docs/latest/quick-start.html>`_.