Add example for friendly URLs with concern in README
Add example for friendly URLs with concern in README

Thanks to @IngusSkaistkalns for his suggestion. closes #588

amatsuda/kaminari,iberianpig/kaminari,sendgrid/kaminari,plribeiro3000/kaminari,dblock/kaminari,jiamaozheng/kaminari,Zhomart/kaminari,onursarikaya/kaminari,bonekost/kaminari,mrhead/kaminari,mrhead/kaminari,sanrodari/kaminari,Boomkat/kaminari,sendgrid/kaminari,Boomkat/kaminari,mperrando/kaminari,iberianpig/kaminari,varvet/kaminari,thiagorp/kaminari,wkirschbaum/kaminari,epicagency/kaminari,plribeiro3000/kaminari,parity/kaminari,sanrodari/kaminari,mperrando/kaminari,peter-umb/umbie_kaminari,kaminari/kaminari,joe1chen/kaminari,peter-umb/umbie_kaminari,guodongme/kaminari,Zhomart/kaminari,amatsuda/kaminari,antstorm/kaminari,jiamaozheng/kaminari,varvet/kaminari,bsboris/kaminari,Teino1978-Corp/Teino1978-Corp-kaminari,royels/kaminari,JuanitoFatas/kaminari,dblock/kaminari,royels/kaminari,sr-education/kaminari,aelogica/kaminari,bsboris/kaminari,epicagency/kaminari,aelogica/kaminari,sideci-sample/sideci-sample-kaminari,sachin21/kaminari,onursarikaya/kaminari,pat/kaminari,sr-education/kaminari,sendgrid/kaminari,parity/kaminari,jcoyne/kaminari,thiagorp/kaminari,fkagami/kaminari,danimashu/kaminari,antstorm/kaminari,guodongme/kaminari,danimashu/kaminari,bonekost/kaminari,kaminari/kaminari,yui-knk/kaminari,JuanitoFatas/kaminari,pat/kaminari,wkirschbaum/kaminari,joe1chen/kaminari,Teino1978-Corp/Teino1978-Corp-kaminari,sachin21/kaminari,yui-knk/kaminari