exercism/exercism.io — pull request #1148 by petehuang (2013-12-13 04:43:48+00:00)
Title: Add nth prime exercise for elixir

@pminten, @rubysolo: Tried my best with the example. It generates primes up to 1000 and checks if we've found enough primes. If not, we generate 4000, then 160000, etc.