Small refactoring for HEAD request features. (same way as in Sinatra)
Small refactoring for HEAD request features. (same way as in Sinatra)

dpcf/limonade,dateutli/hackdfw,dateutli/hackdfw,sofadesign/limonade,emonzain/PiProcessors,emonzain/PiProcessors,ulimartinez/hackdfw,dateutli/hackdfw,dateutli/hackdfw,emonzain/PiProcessors,jnadaud/limonade,ulimartinez/hackdfw,ulimartinez/hackdfw,ulimartinez/hackdfw