Hangman game implemented in Ruby Rails

The projects serves an exercise ground for Powershop NZ trainees. It demonstrates a few essential Rails features including

1. model with validation

2. controller

3. view rendering

4. service

5. test cases based on RSpec and Capybara

6. most importantly, Ruby/Rails best practice in action

To run the program, simply

# cd <project_top_dir> && rails s