Adopt ember-ignore-children-helper

[bjornharrtell]

Intends to resolve #337.

[bjornharrtell]

@lukemelia friendly nudge to ask if this is acceptable.

[lukemelia]

@bjornharrtell This looks fine except we should not have a license file in addon/helpers.

[bjornharrtell]

@lukemelia are you sure? it's the license from the adopted code, it says it has to be redistributed with the code.

[bjornharrtell]

Of course, perhaps it's better to inline that in the code itself?

[lukemelia]

Of course, perhaps it's better to inline that in the code itself?

Yes, inline in the helper file would be appropriate.

[bjornharrtell]

@lukemelia done

[lukemelia]

Thanks @bjornharrtell!