* update README

CHANGELOG.md

@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ## [Unreleased]
 
+### Added
+
+* `config` option
+
 ## [1.3.0]
 
 ### Added

README.md

@@ -22,7 +22,8 @@ steps:
     private-key: ${{ secrets.SSH_KEY }}
     public-key: ${{ secrets.SSH_KEY_PUBLIC }}
     name: id_rsa # optional
-    known-hosts: ${{ secrets.KNOWN_HOSTS }} # optional
+    known-hosts: ${{ secrets.KNOWN_HOSTS }} # known_hosts; optional
+    config: ${{ secrets.CONFIG }} # ssh_config; optional
 - name: Install packages
   run: apt install openssh-client rsync
 - name: rsync over ssh