Properly parse base_url flag in the command-line interface -- closes GH-26
Properly parse base_url flag in the command-line interface -- closes GH-26

ale7714/premailer,ministrycentered/premailer,r-shah/java-premailer-wrapper,PrecisionNutrition/premailer,ministrycentered/premailer,constantcontact/premailer,fxposter/premailer,PrecisionNutrition/premailer,Guestfolio/premailer,ale7714/premailer,academia-edu/premailer,r-shah/java-premailer-wrapper,constantcontact/premailer,Nix-wie-weg/premailer,will-in-wi/premailer,academia-edu/premailer,thebeansgroup/premailer,thebeansgroup/premailer,Nix-wie-weg/premailer,Guestfolio/premailer,will-in-wi/premailer,danimashu/premailer,danimashu/premailer,zurb/premailer,r-shah/java-premailer-wrapper