* README
  -- updated link location
* modules/scanner/service_scan.py
  -- added databases
* modules/sniffer/sniffer.py
  modules/sniffer/http_sniffer.py
  modules/sniffer/password_sniffer.py
  modules/sniffer/traffic_sniffer.py
  -- Moved the sniff filter into the abstract class;
     just require each sniffer to set a filter variable.
* modules/util.py
  -- added function for retrieving raw byte array from Scapy layer
Merge branch 'dev' of github.com:hatRiot/zarp into dev