Added timeout func details to README
Added timeout func details to README

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