Just to clarify, if I want to run this as part of travis then I should have the screenshots under source control and when I intentionally change the UI I should

Just to clarify, if I want to run this as part of travis then I should have the screenshots under source control and when I intentionally change the UI I should run it locally and push the new screenshot as part of the commit but when I don't intend to change the UI it will fail the build if something changes.