naga v1.0

Naga is a terminal implementation of snake game. URL: http://github.com/anayjoshi/naga.
This is a first time addition of this project in homebrew. The project has existed for quite some time, the github repository was refurnished today.
Can you paste what you did? This worked for me:

```ruby
  def install
    scons "install", "install_path=#{bin}"
  end
```