Adds Jet, modifies RingTest
Merge pull request #249 from fgcallari-twitter/topic/jets

Adds Jet, modifies RingTest
Add an AUTHORS.md file listing our contributors.
mention the authors file in the readme
fix Christian Krause's credit
Merge pull request #250 from non/topic/authors

Topic/authors
add relative links to readme
Remove unnecessary NRoot context bound.

Fixes #251. Thanks adelbertc!
Add Adelbert Chang as contributor.
Add a whole bunch of Arbitrary instances for ScalaCheck.

This closes #252, although in the future we may want even more.
We may also want to create some types solely to help people who
are doing testing, for example:

  case class FiniteDouble(d: Double)
  case class ExactReal(r: Real)
  case class IrrationalReal(r: Real)

These might be annoying, but I have a feeling they would be nicer
than having to manually filter ScalaCheck instances and potentially
failing due to too many filtered cases.
first-pass at a guide to contributing
correc -> correct
Merge pull request #253 from non/topic/contributing

first-pass at a guide to contributing
fix trailing words
try to stabilize scalacheck test