Simplified some release code in Gruntfile
Simplified some release code in Gruntfile

no issue

TryGhost/Ghost,TryGhost/Ghost,bitjson/Ghost,e10/Ghost,bitjson/Ghost,JohnONolan/Ghost,janvt/Ghost,e10/Ghost,JohnONolan/Ghost,janvt/Ghost,ErisDS/Ghost,ErisDS/Ghost,ErisDS/Ghost,TryGhost/Ghost,JohnONolan/Ghost