wipe README file, need to be rewritten

README.md

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 # Hadoop Docker
-
-This repository provides Hadoop in Docker containers. You can either run Hadoop in a single node or create a cluster.
-
-The deployed Hadoop uses data replication "2". To change it edit the hdfs-site.xml file.
-
-All data are stored in /hdfs-data, so to store data in a host directory run the container using "-v /path/to/host:/hdfs-data".
-By default the container formats the namenode directory only if not exists (hdfs namenode -format -nonInteractive).
-If you want to mount an external directory that already contains a namenode directory and format it you have to first delete it manually.
-
-## Single node mode
-
-To deploy a single Hadoop node run
-
-    docker run -h namenode bde2020/hadoop-base
-
-To store data in a host directory run the container as as
-
-    docker run -h namenode -v /path/to/host:/hdfs-data bde2020/hadoop-base
-
-## Cluster mode
-
-The namenode runs in a seperate container than the datanodes.
-
-To start the namenode run 
-
-    docker run --name namenode -h namenode bde2020/hadoop-namenode
-
-To add a datanode to the cluster run
-
-    docker run --link namenode:namenode bde2020/hadoop-datanode
-
-Use the same command to add more datanodes to the cluster
-
-More info is comming soon on how to deploy a Hadoop cluster using docker network and docker swarm
-
-# access the namenode
-
-The namenode listens on 
-
-    hdfs://namenode:8020
-
-To access the namenode from another container link it using "--link namenode:namenode" and then use the afformentioned URL.
-More info on how to access it using docker network coming soon.