add specs for manipulating params in a before filter, fixes #367
add specs for manipulating params in a before filter, fixes #367

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