Update cookbooks

* Replace old nginx cookbook with new chef_nginx cookbooks
* Update application cookbook

cookbooks/yum-epel/README.md

@@ -1,4 +1,5 @@
 # yum-epel Cookbook
+
 [![Build Status](https://travis-ci.org/chef-cookbooks/yum-epel.svg?branch=master)](http://travis-ci.org/chef-cookbooks/yum-epel) [![Cookbook Version](https://img.shields.io/cookbook/v/yum-epel.svg)](https://supermarket.chef.io/cookbooks/yum-epel)
 
 Extra Packages for Enterprise Linux (or EPEL) is a Fedora Special Interest Group that creates, maintains, and manages a high quality set of additional packages for Enterprise Linux, including, but not limited to, Red Hat Enterprise Linux (RHEL), CentOS and Scientific Linux (SL), Oracle Linux (OL).
@@ -6,20 +7,32 @@ Extra Packages for Enterprise Linux (or EPEL) is a Fedora Special Interest Group
 The yum-epel cookbook takes over management of the default repositoryids shipped with epel-release. It allows attribute manipulation of `epel`, `epel-debuginfo`, `epel-source`, `epel-testing`, `epel-testing-debuginfo`, and `epel-testing-source`.
 
 ## Requirements
+
 ### Platforms
+
 - RHEL/CentOS and derivatives
 
 ### Chef
-- Chef 11+
+
+- Chef 12.1+
 
 ### Cookbooks
-- yum version 3.6.3 or higher
+
+- compat_resource
 
 ## Attributes
+
 The following attributes are set by default
 
 ```ruby
-default['yum-epel']['repositories'] = %w{epel epel-debuginfo epel-source epel-testing epel-testing-debuginfo epel-testing-source}
+default['yum-epel']['repos'] = %w(
+  epel
+  epel-debuginfo
+  epel-source
+  epel-testing
+  epel-testing-debuginfo
+  epel-testing-source
+)
 ```
 
 ```ruby
@@ -139,6 +152,7 @@ include_recipe 'yum-epel'
 ```
 
 ## License & Authors
+
 **Author:** Cookbook Engineering Team ([cookbooks@chef.io](mailto:cookbooks@chef.io))
 
 **Copyright:** 2011-2016, Chef Software, Inc.