diff --git a/README.md b/README.md
index b869f33..78e1ec0 100644
--- a/README.md
+++ b/README.md
@@ -8,18 +8,19 @@ Jekyll Responsive Images is a [Jekyll](http://jekyllrb.com/) plugin and utility
 
 ## Installation
 
-Install the gem yourself
+You can either use the gem and update your `_config.yml`:
 
 ```
 $ gem install jekyll-responsive_image
 ```
 
-Or simply add it to your Jekyll `_config.yml`:
-
 ```yaml
+# _config.yml
 gems: [jekyll-responsive_image]
 ```
 
+Or you can simply copy [`responsive_image.rb`](lib/jekyll/responsive_image.rb) into your `_plugins` directory.
+
 ## Configuration
 
 An example configuration is below.