feat(Effects): Add root effects init action

[timdeschryver]

Closes #246

[coveralls]

Coverage increased (+0.9%) to 92.314% when pulling d7cd73d on tdeschryver:pr/root-effects-init into d5640ec on ngrx:master.

[MikeRyanDev]

I think this needs to be beneath the lines where you add the effects.

[timdeschryver]

Changed.
Why exactly 😄 ?

[MikeRyanDev]

Dispatching and registering the effects happens synchronously. Moving the dispatch to after registering the effects will give the effects a chance to listen for this new action type.

[brandonroberts]

I would rename the type string to @ngrx/effects/init

[timdeschryver]

Yep you're right, don't know what I was thinking!

[coveralls]

Coverage increased (+0.9%) to 92.314% when pulling a8c1419 on tdeschryver:pr/root-effects-init into d5640ec on ngrx:master.

[coveralls]

Coverage increased (+0.9%) to 92.314% when pulling 567d67a on tdeschryver:pr/root-effects-init into d5640ec on ngrx:master.

[coveralls]

Coverage increased (+0.9%) to 92.314% when pulling 567d67a on tdeschryver:pr/root-effects-init into d5640ec on ngrx:master.

[MikeRyanDev]

Thanks @tdeschryver!

[felikf]

I am just wondering ... is this supposed to work in feature effects (EffectsModule.forFeature([Effects])? Because it does not...

If I use:

@Effect({ dispatch: false }) init$= this.actions$
    .ofType(ROOT_EFFECTS_INIT)
    .do(console.log.bind(console, 'HIT!!!!'));

in root module, it works (it logs).

When I use it in feature module, it does not (it does not log).

I would need this for feature module though... :)