Fixing strict mode alerts.
Refactoring App class to use ES6
Revert "Refactoring App class to use ES6"

This reverts commit 092b69b407168010833136514a11976e8ef761b1.
Refactoring lib/azk and save current path in AZK_CURRENT_SYSTEM.
Initial refactoring, now use: es6, grunt and replacing app => system.
Dawngrading node to v0.10.26
Fixing gulpfile.js to use nuxlli/gulp-traceur.
Moving constants.js to azk/config and fixing testes.
Initial manifest code and tests.
Adding .vimrc in gitignore.
Back to the Grunt :D
Adding initial code for parse manifest.
Refactoring the code dsl class manifest.
Adding Utils.qify a class.
Refactoring Azk.Docker to use es6.
Adding spec helpers: makeMemoryStream and mockOutputs.
Adding task before all test, now removing all containers.
Refactoring Docker.run method.
Refactoring config to use NODE_ENV.
Adding Docker.findContainer and refactoring findImage.