Add package `publicsuffix` to .travis.yml
Add package `publicsuffix` to .travis.yml

parnurzeal/gorequest,QuentinPerez/gorequest,kemadz/gorequest,csrgxtu/gorequest,going/requests,vicanso/gorequest,julianshen/gorequest,rockneurotiko/gorequest,roth1002/gorequest,fromkeith/gorequest,jqs7/gorequest