fix gemfile source.
fix gemfile source.

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