README.md in quality-26.0.0 vs README.md in quality-27.0.0

@@ -51,10 +51,11 @@
 
 
 ## How to use - as part of a Ruby-based Rakefile
 
 ```bash
-$ brew install cmake icu4c # OS X
+$ pip install pep8 flake8
+$ brew install cmake icu4c shellcheck scalastyle # OS X
 $ gem install quality
 ```
 
 or in your Gemfile: