Use log interface instead of logger instance
Story: Log Share events to a file
https://www.pivotaltracker.com/story/show/58820210
Log S3 destination
Fix typo
Fix integration test
Story: Make the uploader create datebased folders on GMT time instead of local time
https://www.pivotaltracker.com/story/show/61256744
Merge pull request #10 from imosquera/utc

Use UTC time instead of local