chef

https://github.com/opscode/chef

Ruby

A systems integration framework, built to bring the benefits of configuration management to your entire infrastructure.

Chef::DSL::IncludeAttribute#include_attribute

Loads the attribute file specified by the short name of the
file, e.g., loads specified cookbook's
  "attributes/mailservers.rb"
if passed
  "mailservers"

Source | Google | Stack overflow

Edit

git clone [email protected]:opscode/chef.git
cd chef
open lib/chef/dsl/include_attribute.rb

Contribute

# Make a new branch
git checkout -b -your-name--update-docs-Chef--DSL--IncludeAttribute-include_attribute-for-pr

# Commit to git
git add lib/chef/dsl/include_attribute.rbgit commit -m "better docs for Chef::DSL::IncludeAttribute#include_attribute"

# Open pull request
gem install hub # on a mac you can `brew install hub`
hub fork
git push <your name> -your-name--update-docs-Chef--DSL--IncludeAttribute-include_attribute-for-pr
hub pull-request

# Celebrate!