Allow public get for view.emptyState.state

[gustavodiel]

It'd be cool to get the current state of each view in so that if it is already displaying the desired state, we don't need to replay the animation, like

func onReaload() {
    ...
    if view.emptyState.state != MyStates.noInternet {
       view.emptyState.show(MyState.noInternet)
    }
}

or maybe have another attribute for that, like view.emptyState.currentState.

If y'all agree, I could make the PR no problem!