Fixed test-unit gem dependency on ruby > 2.1
Fixed test-unit gem dependency on ruby > 2.1

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