Implemented enhancements:
- Update "Mocha" for Bower builds #78
- Adjust testem config and add acceptance test #119 (Turbo87)
- TravisCI: Update Node.js to 6.x #118 (Turbo87)
- Update "mocha" and "chai" bower dependencies #122 (Turbo87)
- Import "ember-mocha-adapter" #120 (Turbo87)
