Fix small bug in HEAD output, and add OPTIONS verb.
Fix small bug in HEAD output, and add OPTIONS verb.

micha/resty,micha/resty,micha/resty,micha/resty,AdrieanKhisbe/resty,AdrieanKhisbe/resty,AdrieanKhisbe/resty,micha/resty,AdrieanKhisbe/resty,AdrieanKhisbe/resty