Remove Picasso dependency

[ppamorim]

Make it out of box.
Just add a callback to return the ImageView.

[florent37]

You think it's better to add just a getter to the imageview ?

It's an good idea, but I added the dependency for implementing directly the fading animation in the callback.

mViewPager.setImageUrl(imageUrl,fadeDuration);

how do you think we can proceed ?

[ppamorim]

I'll do it.

[florent37]

ok great 👍
thanks for helping me improving MaterialViewPager, it's so cool

[ares89]

@ppamorim
is there any news about this?
thanks