Update to avoid 403 error when requesting container metadata and using ACL
Fix pkgcloud url
Fix support for Rackspace ServiceNet
Merge branch 'master' of https://github.com/rossj/rackit into pkgcloud-update

# By Ben Lodge
# Via Ben Lodge (1) and Ross Johnson (1)
* 'master' of https://github.com/rossj/rackit:
  fix options.filename for id variable
Update to use latest version of pkgcloud
Update get() to no longer send callback to download(), prevents buffering
version bump
Update dev dependency versions
Merge pull request #15 from rossj/pkgcloud-update

Pkgcloud update