Populate metadata before detecting redirects.
Merge pull request #43 from AndrewKvalheim/detect-redirects

Populate metadata before detecting redirects.
Version bump
fix typo
Merge pull request #45 from kkurian/master

fix typo
Getting ready for a new release...
Detecting whether the content encoding changed...

Basically, detects whether the content encoding of the s3 resource
matches what we expect. If not, update the file.