add nc and ping (#9)

* add nc and ping

* add nslookup

busybox.min.config

@@ -914,23 +914,23 @@ CONFIG_FEATURE_IP_ROUTE_DIR=""
 # CONFIG_NAMEIF is not set
 # CONFIG_FEATURE_NAMEIF_EXTENDED is not set
 # CONFIG_NBDCLIENT is not set
-# CONFIG_NC is not set
+CONFIG_NC=y
 # CONFIG_NETCAT is not set
 # CONFIG_NC_SERVER is not set
 # CONFIG_NC_EXTRA is not set
 # CONFIG_NC_110_COMPAT is not set
 # CONFIG_NETSTAT is not set
 # CONFIG_FEATURE_NETSTAT_WIDE is not set
 # CONFIG_FEATURE_NETSTAT_PRG is not set
-# CONFIG_NSLOOKUP is not set
+CONFIG_NSLOOKUP=y
 # CONFIG_FEATURE_NSLOOKUP_BIG is not set
 # CONFIG_FEATURE_NSLOOKUP_LONG_OPTIONS is not set
 # CONFIG_NTPD is not set
 # CONFIG_FEATURE_NTPD_SERVER is not set
 # CONFIG_FEATURE_NTPD_CONF is not set
 # CONFIG_FEATURE_NTP_AUTH is not set
-# CONFIG_PING is not set
-# CONFIG_PING6 is not set
+CONFIG_PING=y
+CONFIG_PING6=y
 # CONFIG_FEATURE_FANCY_PING is not set
 # CONFIG_PSCAN is not set
 # CONFIG_ROUTE is not set