Introduce triq quickcheck library.

This commit enables quick-check testing. Not all functions have been tested and
the function that is tested, fe:count/2, isn't tested as completely as it could
be. Progress for the future!

Signed-off-by: Brian L. Troutwine <brian@troutwine.us>
Remove travis-ci compilation on R15 and below.

We've found that rebar as bundled does not work on R14 and that dialyzer can
also fail on some R14 installations. Support for R14 is removed pending further
interest.

Signed-off-by: Brian L. Troutwine <brian@troutwine.us>
Merge pull request #16 from blt/triq

Introduce triq quickcheck library.