Merge pull request #4 from mistio/update-0.15

Update 0.15
Revert "Update 0.15"
Merge pull request #5 from mistio/revert-4-update-0.15

Revert "Update 0.15"
Revert "Revert "Update 0.15""
Merge pull request #6 from mistio/revert-5-revert-4-update-0.15

Revert "Revert "Update 0.15""
show only active locations for nephoscale
fix documentation string
add create key pair and list keypairs for SoftLayer
add ssh key on SoftLayer deployment
on nephoscale compute, specify whether to show active locations or not, and show dedicated servers in list_nodes as well as cloud servers
add service type of nodes on extra.tags, for NephoScale
fix issue preventing multiple GCE accounts to communicate correctly
reference nodes with name instead of id, for NephoScale
Merge pull request #7 from mistio/nephoscale_fix

reference nodes with name instead of id, for NephoScale
support v2 of DigitalOcean API, keep support for v1 too
add digitalocean v2 driver
support v2 Digital Ocean API
update rackspace pricing
add t2 types for ec2
ec2 pricing update