update README, closes #121

Improvement - Disable reload of nginx when enabled=False (previously the nginx was always reloaded if settings.config != None; even with enabled=False)

New feature - Enable the uploading of the config files

Updated pillar.example file with distro learnings

Fix for OpenSuse leap, salt 2016.3.4-84.13

In order to improve security and ease of use, added creation/generation
of dhparam file.

Make certificates path configurable.

Fix missing defaults when no `install_from_*` is set

Add support to install phusion passenger in the `ng`

Move includes to the top of nginx.conf

Fixed reference to pkg state when installing from official Debian repo

Fixed runlevel on nginx upstart file

Use oscodename instead of hard coded trusty for deb

Removed comment after testing that this change works with xenial

nginx/package: add onlyif requisite to nginx-old-init

add depenency to salt-contrib's basicauth

touch htpasswd file if it doesn't exist

Fixes #70

change watch to listen so it will only trigger a refresh of the service at the end

Replace the term vhost for server everywhere and solve issue #105

avoid crash if private_key is not shipped in pillar

Add newline to blocks like location, server, httpd and etc