…uction environments using docker.

### What is this PR for?
This PR is for the documentation of running zeppelin on production environments especially spark on yarn.
Related issue is apache#1227 and I got a lot of hints from https://github.com/sequenceiq/hadoop-docker.
Tested on ubuntu.

### What type of PR is it?
Documentation

### What is the Jira issue?
https://issues.apache.org/jira/browse/ZEPPELIN-1280

### Questions:
* Does the licenses files need update? no
* Is there breaking changes for older versions? no
* Does this needs documentation? no

Author: astroshim <[email protected]>
Author: AhyoungRyu <[email protected]>
Author: HyungSung <[email protected]>

Closes apache#1318 from astroshim/ZEPPELIN-1280 and squashes the following commits:

60958cd [astroshim] small changes for doc
6c44b7b [astroshim] Merge branch 'master' into ZEPPELIN-1280
dad297c [astroshim] update version
4c8d72d [astroshim] merge with Ayoung's
8c62cf1 [astroshim] fixed felixcheung pointed out.
86ca513 [HyungSung] Merge pull request #9 from AhyoungRyu/ZEPPELIN-1280-ahyoung
cde5f8d [AhyoungRyu] Modify document description so that this docs can be searched
9e9390c [AhyoungRyu] Minor update for spark_cluster_mode.md
633c930 [astroshim] running zeppelin on yarn

## What is this PR for?
The PR is a interpreter for [Apache Beam](http://beam.incubator.apache.org) which is an open source unified platform for data processing pipelines. A pipeline can be build using one of the Beam SDKs.
The execution of the pipeline is done by different Runners . Currently, Beam supports Apache Flink Runner, Apache Spark Runner, and Google Dataflow Runner.

### What type of PR is it?
- Feature

### Todos
* Test case
* Review Comments
* Documentation

### What is the Jira issue?
* [ZEPPELIN-682]

### How should this be tested?
- Start the Zeppelin server
- The prefix of interpreter is `%beam` and then write your code with required imports and the runner

### Screenshots (if appropriate)
![](https://s9.postimg.org/s6eiwrbxb/beam_interpreter.png)
![](https://s9.postimg.org/eq3h8wsrz/visualisation_with_table.png)

### Questions:
* Does the licenses files need update? no
* Is there breaking changes for older versions? no
* Does this needs documentation? yes

Author: mahmoudelgamal <[email protected]>
Author: mfelgamal <[email protected]>
Author: Fouad <[email protected]>

Closes apache#1334 from mfelgamal/beam-interpreter-static-repl-7 and squashes the following commits:

da66c27 [mahmoudelgamal] Modify condition of checking static modifier
55c1322 [mahmoudelgamal] set spark version to 1.6.2 and throw original exception
27d7690 [mahmoudelgamal] set spark version to 1.6.1 and some modifications
750041c [mahmoudelgamal] Add readme file and modify pom file and travis.yml
ca88f94 [mahmoudelgamal] edit pom file and .travis.yml
3d65427 [mahmoudelgamal] update .travis.yml file
f19f98d [mahmoudelgamal] Make easy example with imports ands some modifications
74c14ca [mahmoudelgamal] Update the licenses
acc7afb [mahmoudelgamal] Change beam to version 0.2.0
e821614 [mahmoudelgamal] Removing hadoop-core and print stack trace to failure
5cb7c7b [mahmoudelgamal] Add some changes to doc and pom file
75fc4f7 [mahmoudelgamal] add interpreter to navigation.html and remove extra spaces and lines
9b1b385 [mahmoudelgamal] put beam in alphabetical order
9c1e25d [mahmoudelgamal] Adding changes like logging and conventions and license
2aa6d65 [mahmoudelgamal] changing class name to StaticRepl and adding some modifications
7cf25fb [mahmoudelgamal] Adding some tests
3c5038f [mahmoudelgamal] Modifying the documentation
5695077 [mahmoudelgamal] Modifying pom file and Making documentation
26fc59b [mahmoudelgamal] Refactoring of the code
3a2bd85 [mahmoudelgamal] Adding the beam to zeppelin 7
ab7ee2d [mahmoudelgamal] beam interpreter
85957ff [mfelgamal] Merge pull request #10 from apache/master
852c3d3 [mfelgamal] Merge pull request #9 from apache/master
a4bcc0d [mfelgamal] Merge pull request #8 from apache/master
858f1e1 [mfelgamal] Merge pull request #7 from apache/master
03a1e80 [mfelgamal] Merge pull request #4 from apache/master
2586651 [Fouad] Merge pull request #2 from apache/master