Add deprecation notice (#154)

Signed-off-by: detjensrobert <github@detjens.dev>

CHANGELOG.md

@@ -2,6 +2,10 @@
 
 This file is used to changes made in each version of the selinux_policy cookbook.
 
+## Unreleased
+
+- Add deprecation notice to README
+
 ## 2.4.3 (2020-08-07)
 
 - Ship the correct license file since this cookbook was relicensed - [@tas50](https://github.com/tas50)

README.md

@@ -5,6 +5,12 @@
 
 This cookbook can be used to manage SELinux policies and components (rather than just enable / disable enforcing). I made it because I needed some SELinux settings done, and the `execute`s started to look annoying.
 
+> ## ⚠ This cookbook is deprecated ⚠
+>
+> Use the [`selinux` cookbook](https://github.com/sous-chefs/selinux) instead. That cookbook has all the resources that this cookbook does, and is properly tested on current platforms. This cookbook is no longer maintained.
+>
+> For more context, see sous-chefs/selinux#79.
+
 ## Requirements
 
 Needs an SELinux policy active (so its values can be managed). Can work with a disabled SELinux system (see attribute `allow_disabled`), which will generate warnings and do nothing (but won't break the run). Also requires SELinux's management tools, namely `semanage`, `setsebool` and `getsebool`. Tools are installed by the `selinux_policy::install` recipe (for RHEL/Debian and the like).
@@ -206,4 +212,4 @@ end
 
 ## Original Author
 
-[Nitzan Raz](https://github.com/BackSlasher) ([backslasher](http://backslasher.net))
+[Nitzan Raz](https://github.com/BackSlasher) ([backslasher](http://backslasher.net))