Run tests and specs
Add Ruby 2.1.2 to the build matrix
Add Rubinius 2.x
:fire: spec/spec.opts from gemspec files, manifest
Disable Rubinius 2.x

It works, but to be practical it's too slow to care about for now.
Merge pull request #119 from ruby-ldap/ci-specs-and-tests

[CI] Run specs and tests