Add Gruntfile.js for grunt 0.4
Add Gruntfile.js for grunt 0.4

kswedberg/jquery-smooth-scroll,razetime/jquery-smooth-scroll,brazilianldsjaguar/jquery-smooth-scroll,wskplho/jquery-smooth-scroll,kswedberg/jquery-smooth-scroll,peterhartree/jquery-smooth-scroll,lambda2/jquery-smooth-scroll,lambda2/jquery-smooth-scroll,brazilianldsjaguar/jquery-smooth-scroll,razetime/jquery-smooth-scroll,wskplho/jquery-smooth-scroll