Add proper attribution to license
Add proper attribution to license

Summary: was missing

Reviewed By: sjkirby

Differential Revision: D10306142

fbshipit-source-id: e9ef33691d35a8c2f3c2abaf7f3e73f13e069a68

facebook/screenshot-tests-for-android,facebook/screenshot-tests-for-android,facebook/screenshot-tests-for-android,facebook/screenshot-tests-for-android