Merge pull request #52 from OneID/master

Force symlink creation of /etc/init.d/nginx

nginx/common.sls

     - source: salt://nginx/templates/config.jinja
     - require:
       - file: /etc/nginx
+      - pkg: nginx
 
 {% for dir in ('sites-enabled', 'sites-available') %}
 /etc/nginx/{{ dir }}:

nginx/package.sls

 /etc/init.d/nginx:
   file.symlink:
     - target: /lib/init/upstart-job
+    - force: True
 {% endif %}