add rentercmd to siac
add rentercmd to siac

johnathanhowell/Sia,mtlynch/Sia,NebulousLabs/Sia,MrStrong/Sia,ChrisSchinnerl/Sia,rivine/rivine,mnsl/Sia,ericflo/Sia,mtlynch/Sia,rivine/rivine,mnsl/Sia,NebulousLabs/Sia,MrStrong/Sia,ChrisSchinnerl/Sia,mharkus/Sia,ericflo/Sia,mharkus/Sia