Remove moot `version` property from bower.json
Remove moot `version` property from bower.json

Per bower/bower.json-spec@a325da3

Hkmu/progressbar.js,marcomatteocci/progressbar.js,soulosoul/progressbar.js,kimmobrunfeldt/progressbar.js,arielshad/progressbar.js,marcomatteocci/progressbar.js,prepare/progressbar.js,soulosoul/progressbar.js,Hkmu/progressbar.js,prepare/progressbar.js,elbernante/progressbar.js,elbernante/progressbar.js,kimmobrunfeldt/progressbar.js,halilertekin/progressbar.js,halilertekin/progressbar.js,arielshad/progressbar.js,GerHobbelt/progressbar.js,kimmobrunfeldt/progressbar.js,GerHobbelt/progressbar.js