Merge pull request #160 from chef-cookbooks/ap/xref_integration

Mention the integration guide between Chef Server and Automate

README.md

@@ -170,8 +170,11 @@ default["audit"] = {
 
 #### Reporting to Chef Visibility via Chef Server
 
-If you want the audit cookbook to retrieve compliance profiles and report to Chef Automate(Visibility) through Chef Server, set the `collector` and `profiles` attributes. For example:
+If you want the audit cookbook to retrieve compliance profiles and report to Chef Automate(Visibility) through Chef Server, set the `collector` and `profiles` attributes.
 
+This requires Chef Server version 12.11.0 and Chef Automate 0.6.0 or newer, as well as integration between the two. More details [here](https://docs.chef.io/integrate_compliance_chef_automate.html#collector-chef-server-visibility).
+
+Attributes example:
 
 ```ruby
 "audit": {