Document "Octane" usage

This Ember Octane the default will be to use ES6 classes for models. The README of this project will have to be adjusted to show how to use this addon with ES6 classes.

Example:

export default class MyModel extends Model { ... }

MyModel.prototype.myAction = collectionAction(...)

(thanks you to @rwjblue, who suggested the snippet above)

This is not exactly pretty though, so we might want to think about new API patterns that we can use in the Octane world in the future.

[Turbo87]

@machty you might be interested in https://github.com/rust-lang/crates.io/pull/5126. my plan is to extract that into a standalone addon once I have enough time and it’s not using TS yet, but since it doesn’t use decorators it most likely shouldn’t be that hard to add types.

[dbollinger]

I’m at a point where I want to try using this add-on, so I’m going to use as-is without ES6 classes on my models for now – but there’s been a little bit of discussion in the ember-data discord about goals of modernizing this add-on.

https://discordapp.com/channels/480462759797063690/486549196837486592/695640101375705128