Fix app_file detect when under /usr/lib/ruby/1.8 (debian, etc.) [#249]
Fix app_file detect when under /usr/lib/ruby/1.8 (debian, etc.) [#249]

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