Added naga 1.0

Naga is a terminal implementation of snake game. I had previously asked for a pull request which didn't exactly work out because i was not able to get a clean "brew audit" using scons build system. I am back to using Makefiles for this pull request. Hope everything works out this time round!
This can be `bin.mkpath` (`bin` is a [Pathname](http://www.ruby-doc.org/stdlib-2.0.0/libdoc/pathname/rdoc/Pathname.html) object).