Fix branch detection when setting the canary icon (#2499)
Fix branch detection when setting the canary icon (#2499)

* Fix branch detection

* Use the canary icon on Windows as well

* Add missing space

* `TRAVIS_BRANCH` will be `canary` when a PR targets such branch

zeit/hyperterm,zeit/hyperterm,zeit/hyper,zeit/hyper,zeit/hyper,zeit/hyper