fix long lines for README
fix long lines for README

There are still people who prefer to work in terminals with lines no
longer than 80 chars. [ci skip]

ktw1222/sinatra,miyazawatomoka/sinatra,dariubs/sinatra,kyontan/sinatra,guidohcosta/sinatra,gferguson-gd/sinatra,jkowens/sinatra,siberianbear/sinatra,ryanshaw/sinatra,defsprite/sinatra,jenalgit/sinatra,nicoayala/sinatra,JonRowe/sinatra,ABaldwinHunter/sinatra-classic,JonRowe/sinatra,ganmacs/sinatra,cyberid41/sinatra,siberianbear/sinatra,midorineko/sinatra,davydovanton/sinatra,sethuster/sinatra,sinatra/sinatra,DoraALin/sinatra,Wirachmat/sinatra,nicoayala/sinatra,Rayheng/sinatra,frechei/sinatra,porras/sinatra,trexnix/sinatra,ryanshaw/sinatra,sinatra/sinatra,gferguson-gd/sinatra,dariubs/sinatra,jenalgit/sinatra,guidohcosta/sinatra,porras/sinatra,QLGu/sinatra,JonMidhir/sinatra,mwpastore/sinatra,d-bot/sinatra,eileencodes/sinatra,QLGu/sinatra,kumji/sinatra,nju520/sinatra,JonMidhir/sinatra,defsprite/sinatra,ktw1222/sinatra,frechei/sinatra,RosenDimov/sinatra,lastcat/sinatra,laplaceliu/sinatra,howtolearntocode/sinatra,autopp/sinatra,trexnix/sinatra,wzheng1/sinatra,burningTyger/sinatra,mwpastore/sinatra,howtolearntocode/sinatra,ksw2599/sinatra,ABaldwinHunter/sinatra-classic,d-bot/sinatra,JonMidhir/sinatra,wzheng1/sinatra,emiliocorpus/sinatra,Wirachmat/sinatra,jkowens/sinatra,Rayheng/sinatra,eileencodes/sinatra,mwpastore/sinatra,jkowens/sinatra,autopp/sinatra,emiliocorpus/sinatra,midorineko/sinatra,kumji/sinatra,davydovanton/sinatra,ksw2599/sinatra,cyberid41/sinatra,ganmacs/sinatra,miyazawatomoka/sinatra,lastcat/sinatra,nju520/sinatra,burningTyger/sinatra,sethuster/sinatra,DoraALin/sinatra,laplaceliu/sinatra,kyontan/sinatra,burningTyger/sinatra,RosenDimov/sinatra