### What is this PR for?
Fix minor typos in docs
### What type of PR is it?
Documentation
### Questions:
* Does the licenses files need update? no
* Is there breaking changes for older versions? no
* Does this needs documentation? no
Author: k <K@kui-MacBook-Pro.local>
Author: Mina Lee <minalee@apache.org>
Author: laesunk <laesunk@gmail.com>
Closes#1542 from laesunk/fix_typo and squashes the following commits:
7b703a7 [laesunk] Merge pull request #1 from minahlee/fix_typo
28fc9ce [Mina Lee] Fix more typos
a55ae4a [Mina Lee] Restore wrong changes during rebase
190ac05 [k] fix words
01ce71b [k] fix likly
### What is this PR for?
As more and more document pages are added, it's really hard to find specific pages. So I added searching feature to Zeppelin documentation site([jekyll](https://jekyllrb.com/) based site) using [lunr.js](http://lunrjs.com/).
- **How does it work?**
I created [`search_data.json`](6e02423f54/docs/search_data.json) which is used for docs info template. `lunr.js` combines all of the text from all of the docs in `docs/` into `_site/search_data.json`. It looks like below.

All the info are comes from [Jekyll YAML front matter](https://jekyllrb.com/docs/frontmatter/) variables. (i.e. title, group, description.. that's why I rewrote all docs' title and description.)
[search.js](6e02423f54/docs/assets/themes/zeppelin/js/search.js) will do this job using this data!
### What type of PR is it?
Improvement & Feature
### Todos
* [x] - Keep consistency for all docs pages' `Title`
* [x] - Add some overview sentences to all docs pages' `Description` section (this will be used as the result preview)
* [x] - Add apache license header to all docs page (some pages are missing the license header currently)
* [x] - Add LICENSE for `lunr.min.js`
### What is the Jira issue?
[ZEPPELIN-1219](https://issues.apache.org/jira/browse/ZEPPELIN-1219)
### How should this be tested?
1. Apply this patch and build `ZEPPELIN_HOME/docs` dir -> please see [docs/README.md#build-documentation](https://github.com/apache/zeppelin/tree/master/docs#build-documentation)
2. Click `search` icon in navbar and go to `search.html` page
3. Type anything you want to search in the search bar (i.e. type `python`, `spark`, `dynamic` ... )
### Screenshots (if appropriate)


### Questions:
* Does the licenses files need update? Yes, for `lunr.min.js`
* Is there breaking changes for older versions? no
* Does this needs documentation? no
Author: AhyoungRyu <fbdkdud93@hanmail.net>
Closes#1266 from AhyoungRyu/ZEPPELIN-1219 and squashes the following commits:
7ec8854 [AhyoungRyu] Modify 'no result' sentence
91b71a7 [AhyoungRyu] Remove Apache license header since JSON doesn't allow comment
34afd5d [AhyoungRyu] Add Apache license header to search_data.json
6784282 [AhyoungRyu] Minor search page UI update
0389d28 [AhyoungRyu] Make index.md not to be searched
9f1ba42 [AhyoungRyu] Disable enterkey press & change icon
bd4956a [AhyoungRyu] Add docs.js & search.js to exclude list in pom.xml
624b051 [AhyoungRyu] Add Apache license header to search.js
1381152 [AhyoungRyu] Fix search result skipping issue
6e775f5 [AhyoungRyu] Make pleasecontribute.md not to be searched
ee11136 [AhyoungRyu] Fix some typos
fa01299 [AhyoungRyu] Refine 'description' in some docs as @bzz suggested
da0cff9 [AhyoungRyu] Exclude lunr.min.js
36ba7f1 [AhyoungRyu] Add lunr.min.js license info
f6a05a6 [AhyoungRyu] Apply css style for the search results
68eb997 [AhyoungRyu] Attach 'Apache Zeppelin ZEPPELIN_VERSION Documentation: ' to title
d908c37 [AhyoungRyu] Add searching page
a951fa6 [AhyoungRyu] Add search icon to navbar
0688a79 [AhyoungRyu] Keep consistency all docs' front matter for the right search result
040f532 [AhyoungRyu] Add template for storing docs info based on jekyll front matter
0705bd6 [AhyoungRyu] Add js files: lunr.min.js & search.js
### What is this PR for?
I added auto TOC(Table of Contents) generator for Zeppelin documentation website. TOC can help people looking through whole contents at a glance and finding what they want quickly.
I just added `<div id="toc"></div>` to the each documentation header. [`toc`](https://github.com/apache/zeppelin/compare/master...AhyoungRyu:ZEPPELIN-1018?expand=1#diff-85af09fb498a5667ea455391533f945dR3) recognize `<h2>` & `<h3>` as a title in the docs and it automatically generate TOC. So I set a rule for this work. (I'll write this rule on `docs/CONTRIBUTING.md` or [docs/howtocontributewebsite](https://zeppelin.apache.org/docs/0.6.0-SNAPSHOT/development/howtocontributewebsite.html)).
```
# Level-1 Heading <- Use only for the main title of the page
## Level-2 Heading <- Start with this one
### Level-3 heading <- Only use this one for child of Level-2
toc only recognize Level-2 & Level-3
```
Please see the below attached screenshot image.
### What type of PR is it?
Improvement & Documentation
### Todos
* [x] - Add TOC generator
* [x] - Apply TOC(`<div id="toc"></div>`) to every documentation and reorganize each headers(apply the above rule)
* [x] - Fix some broken code block in several docs
* [x] - Apply TOC to `r.md` (Currently R docs has some duplicated info since [this one](d5e87fb8ba) and [this one](7d6cc7e991) )
* [x] - Apply TOC to `install.md` after #1010 merged
* [x] - Apply TOC to `interpreterinstallation.md` after #1042 merged
### What is the Jira issue?
[ZEPPELIN-1018](https://issues.apache.org/jira/browse/ZEPPELIN-1018)
### How should this be tested?
1. Apply this patch and build `docs/` with [this guide](https://github.com/apache/zeppelin/tree/master/docs#build-documentation)
2. Visit some docs page. Then you can see TOC in the header of page.
### Screenshots (if appropriate)
- Automatically generated TOC in Spark interpreter docs page
<img width="831" alt="screen shot 2016-06-16 at 9 37 18 pm" src="https://cloud.githubusercontent.com/assets/10060731/16140902/945b9c7a-340a-11e6-91f3-b6174738bed0.png">
### Questions:
* Does the licenses files need update?
No. Actually I used [jekyll-table-of-contents#copyright](https://github.com/ghiculescu/jekyll-table-of-contents#copyright). But I don't need to add a license for this :)
* Is there breaking changes for older versions? No
* Does this needs documentation? Maybe
Author: AhyoungRyu <fbdkdud93@hanmail.net>
Closes#1031 from AhyoungRyu/ZEPPELIN-1018 and squashes the following commits:
e66397b [AhyoungRyu] Apply TOC to interpreterinstallation.md
009579b [AhyoungRyu] Add more info to 'What is the next?' in install.md
04cf501 [AhyoungRyu] Revert 'where to start' section
b7cbe5f [AhyoungRyu] Fix typo
cf0911c [AhyoungRyu] Rename license file
388f35a [AhyoungRyu] Add jekyll-table-of-contents license info
6394c70 [AhyoungRyu] Fix image path in python.md
d00e4b1 [AhyoungRyu] Move interpreter/screenshot/ -> asset/../img/docs-img/
3ffb383 [AhyoungRyu] Remove duplicated info in r.md & apply toc
a03ca99 [AhyoungRyu] Exclude toc.js from pom.xml
3fae7df [AhyoungRyu] Apply auto generated toc to install.md
d114a9d [AhyoungRyu] Address @felixcheung feedback
6a788fe [AhyoungRyu] Resize TOC tab indent
6760c00 [AhyoungRyu] Apply auto TOC to all of docs under docs/storage/
fbde57f [AhyoungRyu] Apply auto TOC to all of docs under docs/quickstart/
db76eb6 [AhyoungRyu] Apply auto TOC to all of docs under docs/install/
f35db47 [AhyoungRyu] Apply auto TOC to all of docs under docs/displaysystem/
b05365f [AhyoungRyu] Apply auto TOC to all of docs under docs/rest-api/
163691c [AhyoungRyu] Apply auto TOC to all of docs under docs/manual/
bef398e [AhyoungRyu] Apply auto TOC to all of docs under docs/development/
9c5f76b [AhyoungRyu] Apply auto TOC to all of docs under docs/interpreter/
587d4ba [AhyoungRyu] Apply auto TOC to all of docs under docs/security/
1f10b97 [AhyoungRyu] Change toc configuration
78dca9e [AhyoungRyu] Add toc.js for auto generating TOC
### What is this PR for?
git repo infra have moved from incubator-zeppelin to zeppelin
### What type of PR is it?
Hot Fix
### Questions:
* Does the licenses files need update? No
* Is there breaking changes for older versions? No
* Does this needs documentation? No
Author: Mina Lee <minalee@apache.org>
Closes#983 from minahlee/ZEPPELIN-980 and squashes the following commits:
7542c31 [Mina Lee] remove travis url after travis migration is done
3793b38 [Mina Lee] Move git repository from incubator-zeppelin to zeppelin
### What is this PR for?
Update resources to use Zeppelin TLP links
### What type of PR is it?
[Bug Fix]
### What is the Jira issue?
[ZEPPELIN-898](https://issues.apache.org/jira/browse/ZEPPELIN-898)
Author: Luciano Resende <lresende@apache.org>
Closes#927 from lresende/incubator-links and squashes the following commits:
8fca07c [Luciano Resende] [ZEPPELIN-898] Update resources to use Zeppelin TLP links
### What is this PR for?
Lately, an official location of Zeppelin was changed from **https://github.com/apache/incubator-zeppelin.git** to **http://git.apache.org/incubator-zeppelin.git**. So I changed the old location in several documentations to the latest one.
### What type of PR is it?
Documentation
### Todos
### Is there a relevant Jira issue?
[ZEPPELIN-657](https://issues.apache.org/jira/browse/ZEPPELIN-657)
### How should this be tested?
### Screenshots (if appropriate)
### Questions:
* Does the licenses files need update? No
* Is there breaking changes for older versions? No
* Does this needs documentation? No
Author: Ryu Ah young <fbdkdud93@hanmail.net>
Closes#700 from AhyoungRyu/ZEPPELIN-657 and squashes the following commits:
2144bcc [Ryu Ah young] ZEPPELIN-657: Change 'release' -> 'branch' in howtocontribute.md
813b438 [Ryu Ah young] ZEPPELIN-657: Change 'release' -> 'branch'
23646e5 [Ryu Ah young] ZEPPELIN-657: Fix the wrong locations
c4bef6c [Ryu Ah young] ZEPPELIN-657: fix a typo in howtocontribute.md
a5fb130 [Ryu Ah young] ZEPPELIN-657: Change the official location of Zeppelin