Update steps for package installation in Fedora/EPEL

The copr repository is no longer updated, but the updated package is part of official Fedora distribution now.

Author: Jakuje

README.md

@@ -39,22 +39,26 @@ Install the plugin:
 $ sudo apt-get install sasl-xoauth2
 ```
 
-## Pre-Built Packages for RHEL/Fedora
+## Pre-Built Packages for RHEL/EPEL/Fedora
 
-(Thank you [@augustus-p](https://github.com/augustus-p) for confirming that
-this works!)
+The package is now available in latest Fedora and EPEL8/9. You can see how to enable epel here:
 
-Add the [sasl-xoauth2 Copr
-repository](https://copr.fedorainfracloud.org/coprs/jjelen/sasl-xoauth2/):
+https://docs.fedoraproject.org/en-US/epel/
+
+After that just install the plugin as any other package:
 
 ```
-$ sudo dnf copr enable jjelen/sasl-xoauth2
+$ sudo dnf install sasl-xoauth2
 ```
 
-Install the plugin:
+(Thank you [@augustus-p](https://github.com/augustus-p) for confirming that
+this works!)
+
+For older Fedora versions, you can use the [sasl-xoauth2 Copr
+repository](https://copr.fedorainfracloud.org/coprs/jjelen/sasl-xoauth2/):
 
 ```
-$ sudo dnf install sasl-xoauth2
+$ sudo dnf copr enable jjelen/sasl-xoauth2
 ```
 
 ### A Note on SELinux