Update goamz import

[toffer]

I noticed that the aws package we use is no longer maintained at its current repo, but instead has moved to a new one:

https://github.com/crowdmob/goamz -> https://github.com/AdRoll/goamz

We should update our imports accordingly.

[matthewkmayer]

To muddy the waters, what about the other versions available?

Or the official alpha/experimental Golang SDK? https://github.com/awslabs/aws-sdk-go

[amjith]

The description on their github repo An incredibly experimental, automatically generated set of AWS clients in Go. That really doesn't instill confidence. :)

But if it ever becomes the official client, we can switch to using that.

[joeshaw]

To complicate things even further, there is a library that does parallel transfers to/from S3, which might speed things up: https://github.com/rlmcpherson/s3gof3r

[relistan]

@joeshaw That's cool. But, we're already doing that ourselves inside Dogestry :)

[didip]

@joeshaw PR #58 will introduce s3gof3r. I think it is a good idea if we move on to https://github.com/aws/aws-sdk-go for the rest of the features.

[matthewkmayer]

Is there still interest in using the newer goamz library or should we use with the official lib since it's out of experimental status?

[didip]

I think we should use the official lib. Seems like the community is migrating towards the official lib.