add broadcast-address option

add broadcast address

update test with broadcast addr

format

format

add hostname key to lookup

add hostname field

fmt

update test

add broadcast address and hostname to nodes admin page

fmt

more Address changes

update to use broadcast address with identify and all throughout the lookup

update test for broadcast_address

test broadcast address

remove debug line

add broadcast flag to lookupd

fmt

update readme

switch address back to hostname for backward compat

update to use broadcast address

fmt
Merge pull request #142 from dustismo/broadcast_address_flag

nsqd/nsqlookupd: add --broadcast-address flag