command line: make "seed" command do the right thing
command line: make "seed" command do the right thing

Fixes #328

ericwooley/webtorrent,ngjermundshaug/webtorrent,MiracleBlue/webtorrent,joshterrill/webtorrent,lucamaraschi/webtorrent,Stiveknx/webtorrent,ngjermundshaug/webtorrent,nicola/webtorrent,FabianFrancoRoldan/webtorrent,serafinfernandez/webtorrent,sideffect0/webtorrent,solderzzc/webtorrent,webtorrent/webtorrent,jamesliu96/webtorrent,madmarks/webtorrent,yciabaud/webtorrent,akiva/webtorrent,ericwooley/webtorrent,rozifus/webtorrent,nicola/webtorrent,feross/webtorrent,arestov/webtorrent,webtorrent/webtorrent,Stiveknx/webtorrent,beni55/webtorrent,jamesliu96/webtorrent,dan-hill/webtorrent,FabianFrancoRoldan/webtorrent,solderzzc/webtorrent,gillesdemey/webtorrent,whitef0x0/webtorrent,loon3/webtorrent,fisch0920/webtorrent,feross/webtorrent,LinusU/webtorrent,rozifus/webtorrent,adriagalin/webtorrent,lucamaraschi/webtorrent,gillesdemey/webtorrent,fisch0920/webtorrent,MiracleBlue/webtorrent,karissa/webtorrent,LinusU/webtorrent,madmarks/webtorrent,yciabaud/webtorrent,whitef0x0/webtorrent,rom1504/webtorrent,joshterrill/webtorrent,dan-hill/webtorrent,akiva/webtorrent,adriagalin/webtorrent,sideffect0/webtorrent,karissa/webtorrent,beni55/webtorrent,loon3/webtorrent,serafinfernandez/webtorrent