Tutum api gem

So far the actions are getting/listing services, nodes, clusters and containers. You can also get/list actions, providers and regions, but I'm not sure that would be useful. Thoughts?

Next, I'm going to add start/stop features for services.

Can you change all instances of `UUID` to `uuid` per the [Ruby Styleguide on naming](https://github.com/bbatsov/ruby-style-guide#naming)?