forward options to piggyback correctly
forward options to piggyback correctly

fixes #282

tonsky/lein-figwheel,darwin/lein-figwheel,tonsky/lein-figwheel,bhauman/lein-figwheel,verma/lein-figwheel,bhauman/lein-figwheel,aJchemist/lein-figwheel,bhauman/lein-figwheel,aJchemist/lein-figwheel,darwin/lein-figwheel,verma/lein-figwheel,aJchemist/lein-figwheel,tonsky/lein-figwheel