Update README for lack of bundling in future GoCD

README.md

@@ -1,6 +1,6 @@
 # Yum repository poller plugin for GoCD
 
-The Yum respository poller is a bundled [package material](https://docs.gocd.org/current/extension_points/package_repository_extension.html) plugin capable of polling yum repositories for rpm packages. GoCD server interacts with this plugin via package material plugin interfaces. The plugin makes use of a command similar to the following to poll the server. So it does not depend on the files that yum depends on e.g. files under `/etc/yum.repos.d`
+The Yum respository poller is a [package material](https://docs.gocd.org/current/extension_points/package_repository_extension.html) plugin capable of polling yum repositories for rpm packages. GoCD server interacts with this plugin via package material plugin interfaces. The plugin makes use of a command similar to the following to poll the server. So it does not depend on the files that yum depends on e.g. files under `/etc/yum.repos.d`
 
 ```
 repoquery --repofrompath=uuid,$REPO_URL --repoid=uuid -q $PACKAGE_SPEC -qf "%{LOCATION}..."
@@ -10,7 +10,10 @@ A given instance of polling is considered successful if `repoquery` returns a si
 
 ## Installation
 
-This plugin comes bundled along with the GoCD server, hence a separate installation is not required.
+From GoGCD `23.1.0` onwards, you should download the latest release jar and install into your server's `plugins/external` directory
+per the [plugin user guide](https://docs.gocd.org/current/extension_points/plugin_user_guide.html).
+
+Prior to GoCD `23.1.0`, this plugin came bundled along with the GoCD server, and a separate installation is not required.
 
 > **Note:** This plugin is available for GoCD servers running on Linux nodes having `repoquery` installed using the  [`yum-utils`](http://linux.die.net/man/1/yum-utils) package, [Ubuntu](http://manpages.ubuntu.com/manpages/latest/man1/yum-utils.1.html), [CentOS](http://rpmfind.net/linux/rpm2html/search.php?query=yum-utils&system=centos))
 
@@ -20,7 +23,7 @@ Repo URL must be a valid http, https or file URL. This plugin looks for the pres
 
 ## Package definition
 
-In case of this plugin, the package definition is completely determined by the package spec. The package spec may be in any of the following formats. Please refer the [repoquery man page](https://linux.die.net/man/1/repoquery) for details.
+In case of this plugin, the package definition is completely determined by the package spec. The package spec may be in any of the following formats. Please refer to the [repoquery man page](https://linux.die.net/man/1/repoquery) for details.
 
 ```
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