Add the gem to your bundle:

# Gemfile
gem 'ecm_products'

Install your bundle:

> bundle install

Generate initializer:

> rails generate ecm:products:install

Add migrations:

> rake ecm_products_engine:install:migrations

Migrate:

> rake db:migrate

Add the routes:

# config/routes.rb
Ecm::Products::Routing.routes(self)

rake ecm_products:db:populate

This project rocks and uses MIT-LICENSE.