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.
Btw, `brew` also keeps saying that `install_name_tool` has been replaced with a previous version. Is that messing things up?