Merge pull request #411 from mdelaney/working

support for setting headers with store_object and upload_file from a container
Fixed typo. Noticed by @major in GitHub #412.
minor correction to error handling
sg.update_launch_config causes a 400 Bad Request when no personality is defined
Merge pull request #415 from dearing/working

minor correction to error handling
Merge pull request #416 from hindsightsoftware/update-launch-config-400-error

sg.update_launch_config fails with no personality value
Manually GitHub #410 to working branch.
Merge branch 'working' of github.com:rackspace/pyrax into working
Updated udpate_launch_config(). flavorRef was being set to None
Updated update_launch_config() since flav variable was being set to None.
Fixes case where env vars are ignored.
Fixed missing return value.
Updated smoketest
Merge branch 'working' of github.com:itsmemattchung/pyrax into itsmemattchung-working
Merge branch 'itsmemattchung-working' into working
Replaced dependency on swiftclient with pyrax code.
Added cleanup option to smoketest.
Merge branch 'base64-working' of github.com:jasondunsmore/pyrax into jasondunsmore-base64-working
Merge branch 'jasondunsmore-base64-working' into working