Add ssl certs to nginx recipe

This commit adds ssl certificate and key support to the nginx recipe.
Enable ssl support by default in attributes

This commit enables ssl by default in the attributes.
Merge pull request #6 from WideEyeLabs/Add-ssl-support

#5 - Add ssl support
Merge branch 'master' into Add-ChefSpec

* master:
  Enable ssl support by default in attributes
  Add ssl certs to nginx recipe
Add esty and customink foodcritic rules

This commit adds custom rules for foodcritic from both customink and
etsy. It also ensures that the cookbook follows the newly added rules.