Add Aug 2019 deprecation notice to the readme

Signed-off-by: Tim Smith <tsmith@chef.io>

README.md

@@ -4,6 +4,8 @@
 
 Installs the cron package and starts the crond service.
 
+Note: Chef 14.4 shipped with the cron_d and cron_access (cron_manage) resources. When Chef 15.4 ships in Aug 2019 these resources will be removed from this cookbook as all users should be on Chef 14.4 or later.
+
 ## Requirements
 
 ### Platforms

kitchen.dokken.yml

@@ -76,5 +76,5 @@ platforms:
 
 - name: opensuse-leap
   driver:
-    image: dokken/opensuse-leap
+    image: dokken/opensuse-leap-42
     pid_one_command: /bin/systemd

test/fixtures/cookbooks/test/recipes/default.rb

@@ -21,9 +21,9 @@ apt_update
 
 include_recipe 'cron'
 
-####################
-# Test the resource
-####################
+##########################
+# Test the cron_d resource
+##########################
 
 # create a file with periods as if the older version of this cookbook raspbian
 # the provider should clean it up and we'll test that it doesn't exists
@@ -127,9 +127,9 @@ cron_d 'delete_cron' do
   action :delete
 end
 
-#####################
-# Test the definition
-#####################
+##########################
+# Test the manage resource
+##########################
 
 cron_access 'alice' do
   action :allow