Version bumb v2.1.2

Actually v2.1.1

Fix default overlayUri value

Clean up project files
Change harmony id to ninja.badhalo.Optizoom

Initial Port

- Added zoom scroll #2

Merge pull request #3 from badhaloninja/Spyglass

Customizable Overlay

Merge branch 'master' of https://github.com/badhaloninja/Optizoom

Create LICENSE