demo: Add a query handler
demo: Add a query handler

mbrukman/serf,yonglehou/serf,yonglehou/serf,patrickviet/serf,patrickviet/serf,FollowMyDev/serf,curtiszimmerman/serf,samaitra/serf,hashicorp/serf,jmptrader/serf,gnawhleinad/serf,minhkiller/serf,mapuri/serf,gnawhleinad/serf,pmenglund/serf,patrickviet/serf,dalehamel/serf,curtiszimmerman/serf,gnawhleinad/serf,dalehamel/serf,minhkiller/serf,mbrukman/serf,gnawhleinad/serf,dalehamel/serf,FollowMyDev/serf,minhkiller/serf,patrickviet/serf,samaitra/serf,mapuri/serf,mapuri/serf,mbrukman/serf,dalehamel/serf,mbrukman/serf,mapuri/serf,gnawhleinad/serf,FollowMyDev/serf,mapuri/serf,samaitra/serf,hashicorp/serf,samaitra/serf,curtiszimmerman/serf,hashicorp/serf,curtiszimmerman/serf,gnawhleinad/serf,hashicorp/serf,jmptrader/serf,minhkiller/serf,jmptrader/serf,jmptrader/serf,patrickviet/serf,curtiszimmerman/serf,pmenglund/serf,samaitra/serf,hashicorp/serf,pmenglund/serf,minhkiller/serf,pmenglund/serf,patrickviet/serf,pmenglund/serf,dalehamel/serf,FollowMyDev/serf,yonglehou/serf,FollowMyDev/serf,mapuri/serf,mbrukman/serf,FollowMyDev/serf,pmenglund/serf,minhkiller/serf,mbrukman/serf,curtiszimmerman/serf,jmptrader/serf,yonglehou/serf,dalehamel/serf,yonglehou/serf,jmptrader/serf,yonglehou/serf,samaitra/serf