Updated docs for ≥4.0

plasticine · May 23, 2017 · b496097 · b496097
1 parent feae9a7
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diff --git a/README.md b/README.md
@@ -15,10 +15,17 @@ Serving big images is for numb-skulls! Compress and optimise your imagery during
 
 Go set up the [image_optim](https://github.com/toy/image_optim) external utilities, then;
 
+### Middleman < 4.0
 ```ruby
 gem 'middleman-imageoptim'
 ```
 
+### Middleman ≥ 4.0
+
+```ruby
+gem "middleman-imageoptim", :git => "https://github.com/plasticine/middleman-imageoptim", :branch => "master"
+```
+
 ## Usage
 
 ```ruby