Add Dagger 2 support

[akexorcist]

I have a problem to inject Hawk.java with Dagger 2. So I created the separated module from :hawk module. It's called :hawk-dagger.

In :hawk-dagger, Hawker class, the recreated of Hawk class that support with Dagger 2. Just inject this class in the android project and use it instead of Hawk class (as you can see in dagger-sample module).