Fix code formatting in gemspec
Fix travis configuration to use latest rubygems *and* bundler

* This is the last test of this nature. I'm not sure why this isn't
  working, it seems to work fine on my end. Maybe it's due to the
  version of jruby (?)

  If this test fails I will likely mark this as an allowed failure
  and add a note to test again when travis-ci upgrades to jruby
  1.7.6.