[compute] Add create_or_import_keypair request
[compute] Add list_keypairs request
[identity] support get_user

* implementation
* tests
* cassetes
[image] Add create_image request
[compute] Add list_floating_ips request
[compute] Add create_floating_ip request
Merge pull request #2 from devpopol/feature/get_user

[identity] support get_user
[compute] Add delete_floating_ip request
Merge pull request #1 from stefanymarie/feature/AVIATORAPI-10

Feature/aviatorapi 10
be able to use base_url

-updated test
-updated cassettes
Merge pull request #6 from devpopol/feature/get_user

be able to use base_url
[image] Add support for transferring files from local machine
Merge branch 'develop' into feature/AVIATORAPI-1
[image] Add option for a more detailed list of images
[image] Add additional documentation for list_public_images
[compute] create_server: add key_name parameter
[compute] Add list_security_groups request
[compute] Add create_security_group request
[compute] Add list_security_groups_by_server request
[identity] Add list_roles request