Try `sudo: false` on Travis to speed up the build
Try `sudo: false` on Travis to speed up the build

http://blog.travis-ci.com/2014-12-17-faster-builds-with-container-based-infrastructure/
cssnext/cssnext,pensierinmusica/cssnext,sassy/cssnext,Gerhut/cssnext,zyj1022/cssnext,timhudson/cssnext,arnaudbenard/cssnext,maximkoretskiy/cssnext,MoOx/cssnext,michaelBenin/cssnext,jonathantneal/cssnext,greyhwndz/cssnext,MoOx/postcss-cssnext,dotnetCarpenter/cssnext,topaxi/cssnext,BionicClick/cssnext,jedmao/cssnext