Add cURL examples to Images Getting Started

Github issue: #119

author: diane fleming
Finishing up Cloud Queues curl commands
Modified env vars to UPPERCASE and removed {} around referenced to them
Merge branch 'master' of https://github.com/rackerlabs/developer.rackspace.com into curl-queues
Also fixing identation and replacing lowercase varenvs with VARENVS
Conflicts:
	src/docs/compute/samples/authentication.rst
	src/docs/compute/samples/list_flavors.rst
Whoops I replaced way too much :) Fixed now.
fixed capitalization and uniform auth code for cloud files
Merge branch 'curl-examples'

Moved curl examples to the right location in the file as well.

Conflicts:
	src/docs/files/samples/auth_client.rst
	src/docs/images/samples/authentication.rst
	src/docs/images/samples/create_image_member.rst
	src/docs/images/samples/delete_image_member.rst
	src/docs/images/samples/export_image.rst
	src/docs/images/samples/get_image.rst
	src/docs/images/samples/get_image_member.rst
	src/docs/images/samples/import_image.rst
	src/docs/images/samples/list_image_members.rst
	src/docs/images/samples/list_images.rst
	src/docs/images/samples/update_image.rst
	src/docs/images/samples/update_image_member.rst
Merge branch 'master' of https://github.com/rackerlabs/developer.rackspace.com into curl-queues

Conflicts:
	src/docs/files/samples/auth_client.rst
Merge pull request #154 from rdodev/curl-queues

Finishing up Cloud Queues curl commands