added ssl to package list in readme
config consistency for s3_secure + s3_encrypt
add support for Google Cloud Storage
Refactor to a parent boto class and s3/gcs subclasses
Add a test for GCS
Fix a pep8 error.  Make the config_test pull GS creds from the environment
fix a removed newline.
Fix up some key construction.
Merge pull request #107 from brendandburns/master

add support for Google Cloud Storage
Merge pull request #87 from lucas-clemente/patch-1

Add ssl to package list in readme
config consistency for s3_secure + s3_encrypt
Merge branch 'master' of https://github.com/consultantRR/docker-registry
Merge pull request #97 from consultantRR/master

config consistency for s3_secure + s3_encrypt
Lazy import of implementation of storage depending on usage type.
Merge pull request #109 from noxiouz/lazy_import_fix

Lazy import of implementation of storage depending on usage type.
Make pep8 happy
Add more s3 storage tests improving coverage. Monkeypatch s3 service on testing.
test: add env var for DOCKER_INDEX_ENDPOINT
test: add posarg to tox config
test: remove unused import
replace boto_bucket with $S3_BUCKET env var