Convenience extensions for Activity and Fragment

[Sebastian Sellmair]

As an user of this library I want to get my destinations more straight forward.
I want to type

val myDestination = myDestination()

Instead of

val myDestination = arguments?.tryAsMyDestination()?:throw IllegalArgumentException()

Inside my fragment/activity

[Sebastian Sellmair]

Closed because handled in 0.1.0 branch