Add image tinting utility and tests#150

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ZevEisenberg wants to merge 3 commits intodevelopfrom

feature/zeveisenberg/tint-images

Commits on May 12, 2015

Add image tinting utility and tests. Add test host application so we can use an asset catalog.
Zev Eisenberg
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Update copyright notice.
Zev Eisenberg
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Commits on Jun 30, 2015

Fix overridden deployment target.
Zev Eisenberg
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