[SpritedAnimationView] Updates readme image assets to new URL
[SpritedAnimationView] Updates readme image assets to new URL

Reviewers: ajsecord, #mdc_ios_owners, featherless

Reviewed By: #mdc_ios_owners, featherless

Projects: #material_components_ios

Differential Revision: http://codereview.cc/D266

brianjmoore/material-components-ios,samnm/material-components-ios,material-components/material-components-ios,randallli/material-components-ios,samnm/material-components-ios,sigito/material-components-ios,Eccelor/material-components-ios,randallli/material-components-ios,randallli/material-components-ios,sigito/material-components-ios,material-components/material-components-ios,chriscox/material-components-ios,brianjmoore/material-components-ios,Eccelor/material-components-ios,material-components/material-components-ios,willlarche/material-components-ios,chriscox/material-components-ios,Eccelor/material-components-ios,chriscox/material-components-ios,Eccelor/material-components-ios,willlarche/material-components-ios,material-components/material-components-ios,willlarche/material-components-ios,willlarche/material-components-ios,randallli/material-components-ios,brianjmoore/material-components-ios,randallli/material-components-ios,sigito/material-components-ios,brianjmoore/material-components-ios,randallli/material-components-ios,material-components/material-components-ios,brianjmoore/material-components-ios,sigito/material-components-ios,Eccelor/material-components-ios,samnm/material-components-ios,chriscox/material-components-ios,sigito/material-components-ios,chriscox/material-components-ios,willlarche/material-components-ios,samnm/material-components-ios,samnm/material-components-ios