Use sub in favor of gsub
Use sub in favor of gsub

doorkeeper/premailer-rails,controlshift/premailer-rails,fphilipe/premailer-rails,uswitch/premailer-rails,controlshift/premailer-rails,fphilipe/premailer-rails,uswitch/premailer-rails,doorkeeper/premailer-rails,controlshift/premailer-rails,fphilipe/premailer-rails