add local_port argument
Merge pull request #13 from reorx/arg-port

add local_port argument
bump
support multiple DNS; close #9
Update README.md
delay empty responses; close #16
bump
Update README.md
Update README.md
Update README.md
Update README.md
Update README.md
Update README.md
support -l IP_LIST_FILE
bump
add iplist.txt
Update README.md
support -s 'addr:port'
refine code
try fixing #22