document session_secret in spanish readme
document session_secret in spanish readme

Signed-off-by: Konstantin Haase <a90ceb496d9228fe419696e09c742e68f13c38e0@googlemail.com>

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