Add matrix support for travis runs.
Use the new zuul patch for a cleaner makefile.
Merge pull request #335 from rase-/add/travis-matrix

Add matrix support for travis runs.
travis: remove so many chromes
Makefile: add support for `BROWSER_PLATFORM`
.travis: add `BROWSER_PLATFORM`
.travis: add `BROWSER_PLATFORM`
Makefile: remove `@`
Add quotes around browser version in Makefile.
Release 1.4.0
Merge remote-tracking branch 'upstream/master'