Customizer: Alert on successful save to Gist
Update showSuccess to use new classes
bump grunt-contrib-qunit to ~0.5.1
bump grunt-contrib-jade to ~0.12.0
update shrinkwrap

[skip sauce] [skip validator]
Merge pull request #13731 from twbs/bump-deps

Bump dependency versions
bump grunt-saucelabs to ~8.0.2
update shrinkwrap

[skip validator]
Merge pull request #13732 from twbs/bump-sauce

Bump grunt-saucelabs to ~8.0.2
Added  directive for composer
Merge pull request #13740 from jasny/patch-composer-replace

Added rename directive for composer
Merge pull request #10632 from stuartpb/patch-1

Customizer: Alert on successful save to Gist