V2 api path

[treydock]

Allows use of Pulp v2 API. Some future changes are necessary for accessing some attributes, but this is the first step.

[duritong]

This sounds awesome. Is it really sufficient to change the API that way and it works with v2?

Given that v2 is the way to go now for a while I could imagine that we pull in changes that make it only work with v2, because in the end it might become quite clumsy to keep both version supported. We could then release a new major version to make the break quite clear.

What do you think? I don't actively develop against a v2 installation at the moment, so all code that is using this library will still be against v1, but I don't need to update it, as it works. However, this also means, that I can't really help you in detail with testing all the things. But I can do basic tests against a v2 installation.

Sidenote: And it looks like mime-types is out of Ruby 1.8 support, hence travis is failing. You don't need to worry about that one.