Document "integration: true" and "needs"

[johnnyshields]

I don't see any mention of integration: true or needs in the README for this lib. As I understand it those are the args for the methods in this lib.

Secondly, as an aside related to Ember itself, it would be better if we leveraged ES6's brilliant module functionality and import the modules which each model class needs in model class itself (like every other JS framework) rather than trying to be Ruby-esque and autoload the classes via a "Resolver". This would avoid the whole integration / needs stuff in the tests entirely.

[Turbo87]

@johnnyshields that would also make stubbing/mocking impossible or at least much harder compared to using dependency injection.

[rwjblue]

FWIW, emberjs/rfcs#229 makes integration: true the only non-deprecated path forward.

ember-test-helpers is a lower level library that is leveraged by ember-qunit and ember-mocha. The README for ember-qunit includes documentation around integration: true at this point, so I'm going to go ahead and close this issue...