Elasticsearch: start service automatically.

The Elasticsearch service is only started when provisioning. When provisioning
is skipped (after a halt and then up), Elasticsearch would not be running.

As described in the Elasticsearch documentation we can start the service
automatically: http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/setup-service.html#_debian_ubuntu
Merge pull request #290 from madewithlove/develop

Elasticsearch: start service automatically.
Improve feature according to @fideloper feedback
Deleted magic zeros
Improve feature according to @fideloper feedback
Merge branch 'develop' of github.com:montogeek/Vaprobash into develop
Merge pull request #292 from montogeek/develop

Improve feature according to @fideloper feedback
My GitHub Settings
DRYing up github urls in the vagrantfile
Added NGXCB and make use of it within nginx.sh

NGXCB (Nginx Create Block) makes it easy to quickly create and optionally enable it right away. Type in `sudo ngxcb -h` for more info.
Added ngxcb to helpers

- Added ngxcb to helpers
- Removed nghost
- Added .sh extension to helpers
Fix adding host to Nginx
Use GitHub_url to reach the helper files

Also some minor syntax fixes
Removed .xip.io from $ServerName in ngxcb.sh
Corrected helper file names

- ngen.sh to ngxen.sh
- ngdis.sh to ngxdis.sh
Fixed nginx $hostname