Better detect osx default shell.
Better detect osx default shell.

junjizhi/dotfiles-1,jaredbonobos/dotfiles,johaned/dotfiles,porcoesphino/dotfiles,asharpe/dotfiles,porcoesphino/dotfiles,drzax/dotfiles,junjizhi/dotfiles-1,davestephens/dotfiles,jaredbonobos/dotfiles,viklund/dotfiles,stephencroberts/dotfiles,watho/dotfiles,brandonjc/dotfiles,mikerathbun/dotfiles,Jakobo/dotfiles,ichaber/dotfiles,tpanning/dotfiles,mnme/dotfiles,xiphiaz/dotfiles,fkasper/dotfiles,granteagon/dotfiles,whizzzkid/dotfiles,Jakobo/dotfiles,whizzzkid/dotfiles,coopermaruyama/dotfiles-cowboy,watho/dotfiles,vabole/dotfiles,watho/dotfiles,asharpe/dotfiles,asharpe/dotfiles,montyubuntu/dotfiles,jesperronn/cowboy-dotfiles,smihir/dotfiles,edhaker13/dotfiles,jaredbonobos/dotfiles,johaned/dotfiles,Tom5om/dotfiles,cowboy/dotfiles,smihir/dotfiles,matlockx/dotfiles,tstackhouse/dotfiles,KKfo/dotfiles,TimeDelta/dotfiles,xiphiaz/dotfiles,SteVwonder/dotfiles,viklund/dotfiles,austinrivas/dotfiles,tuanderful/dotfiles,jdloft/dotfiles-1,Mooash/dotfiles,brandonjc/dotfiles,WillChilds-Klein/dotfiles,matlockx/dotfiles,ProtractorNinja/dotfiles-legacy,SteVwonder/dotfiles,tomjrob/dotfiles,junjizhi/dotfiles-1,wesedens/dotfiles,tstackhouse/dotfiles,tkruse/dotfiles,viklund/dotfiles,ekilmer/dotfiles,ifigueroap/dotfiles,SirBraneDamuj/dotfiles,matlockx/dotfiles,TimeDelta/dotfiles,thuai/dotfiles,coopermaruyama/dotfiles-cowboy,mikerathbun/dotfiles,hwrod/dotfiles,ifigueroap/dotfiles,coopermaruyama/dotfiles-cowboy,ricardorsierra/dotfiles,jesperronn/cowboy-dotfiles,edhaker13/dotfiles,mikerathbun/dotfiles,tkruse/dotfiles,c17r/dotfiles,xiphiaz/dotfiles,c17r/dotfiles,jesperronn/cowboy-dotfiles,coopermaruyama/dotfiles-cowboy,austinrivas/dotfiles,fkasper/dotfiles,whizzzkid/dotfiles,l3lake/dotfiles,tpanning/dotfiles,mikerathbun/dotfiles,bwbaugh/dotfiles,cowboy/dotfiles,amxn/dotfiles,KKfo/dotfiles,ricardorsierra/dotfiles,unicell/dotfiles,KKfo/dotfiles,vabole/dotfiles,jdwije/dotfiles,fkasper/dotfiles,johaned/dotfiles,ifigueroap/dotfiles,Mooash/dotfiles,granteagon/dotfiles,TimeDelta/dotfiles,tomjrob/dotfiles,l3lake/dotfiles,junjizhi/dotfiles-1,granteagon/dotfiles,montyubuntu/dotfiles,jdloft/dotfiles-1,whizzzkid/dotfiles,Jakobo/dotfiles,hwrod/dotfiles,l3lake/dotfiles,smihir/dotfiles,Jakobo/dotfiles,asharpe/dotfiles,Tom5om/dotfiles,KKfo/dotfiles,c17r/dotfiles,matlockx/dotfiles,cowboy/dotfiles,thuai/dotfiles,TimeDelta/dotfiles,drzax/dotfiles,porcoesphino/dotfiles,Mooash/dotfiles,CodisRedding/dotfiles,ricardorsierra/dotfiles,wesedens/dotfiles,edhaker13/dotfiles,l3lake/dotfiles,SteVwonder/dotfiles,SteVwonder/dotfiles,vabole/dotfiles,tstackhouse/dotfiles,fkasper/dotfiles,brandonjc/dotfiles,amxn/dotfiles,tpanning/dotfiles,montyubuntu/dotfiles,ekilmer/dotfiles,ekilmer/dotfiles,tstackhouse/dotfiles,tuanderful/dotfiles,c17r/dotfiles,ichaber/dotfiles,dojoteef/dotfiles,CodisRedding/dotfiles,c17r/dotfiles,amxn/dotfiles,edhaker13/dotfiles,unicell/dotfiles,davestephens/dotfiles,granteagon/dotfiles,xiphiaz/dotfiles,WillChilds-Klein/dotfiles,hwrod/dotfiles,TimeDelta/dotfiles,ichaber/dotfiles,tpanning/dotfiles,tuanderful/dotfiles,smihir/dotfiles,coopermaruyama/dotfiles-cowboy,TimeDelta/dotfiles,Tom5om/dotfiles,thuai/dotfiles,jesperronn/cowboy-dotfiles,jdloft/dotfiles-1,porcoesphino/dotfiles,watho/dotfiles,tomjrob/dotfiles,unicell/dotfiles,montyubuntu/dotfiles,hwrod/dotfiles,brandonjc/dotfiles,Tom5om/dotfiles,cowboy/dotfiles,ricardorsierra/dotfiles,johaned/dotfiles,tuanderful/dotfiles,thuai/dotfiles,amxn/dotfiles,WillChilds-Klein/dotfiles,vabole/dotfiles,unicell/dotfiles,jaredbonobos/dotfiles,davestephens/dotfiles,ichaber/dotfiles,tomjrob/dotfiles,WillChilds-Klein/dotfiles,davestephens/dotfiles,hwrod/dotfiles,CodisRedding/dotfiles,jdloft/dotfiles-1,hwrod/dotfiles,drzax/dotfiles,CodisRedding/dotfiles,Mooash/dotfiles