Add lifecycle props to Container

[diegohaz]

I'm having to use lifecycles often. I think it might be a good idea to implement something like https://github.com/reactions/component.

const increment = amount => state => ({ count: state.count + amount });

const CounterContainer = props => (
  <Container 
    initialState={{ count: 0 }}
    onMount={({ setState }) => setState(increment(10))} // componentDidMount
    onUpdate={({ setState }) => setState(increment(10))} // setState call
    onUnmount={({ setState }) => setState(increment(10))} // componentWillUnmount
    actions={{ increment }}
    {...props}
  />
);