Merge pull request #214 from IIIF/deployed

Deployed
Attempt to clarify default, toward #216.
Merge pull request #218 from IIIF/clarify_default

Attempt to clarify default, toward #216. // RS: +1
Towards #217 (SHOULD transparent bg)
Merge pull request #219 from IIIF/rotation_bg_color

Towards #217 (SHOULD transparent bg).
deleted extraneous ] on master
Merge pull request #221 from IIIF/master

Update deployed