update README for 3.0.4

Author: weyrick

README.md

@@ -3,7 +3,9 @@
 ```
 
     Usage:
-      pktvisord [-b BPF] [-p PORT] [-H HOSTSPEC] [--periods P] [--summary] [--geo-city FILE] [--geo-asn FILE] TARGET
+      pktvisord [-b BPF] [-p PORT] [-H HOSTSPEC] [--periods P] [--summary] [--geo-city FILE] [--geo-asn FILE]
+                [--max-deep-sample N]
+                TARGET
       pktvisord (-h | --help)
       pktvisord --version
 
@@ -12,18 +14,19 @@
     TARGET is either a network interface, an IP address (4 or 6) or a pcap file (ending in .pcap or .cap)
 
     Options:
-      -p PORT          Run metrics webserver on the given localhost port [default: 10853]
-      -b BPF           Filter packets using the given BPF string
-      --geo-city FILE  GeoLite2 City database to use for IP to Geo mapping (if enabled)
-      --geo-asn FILE   GeoLite2 ASN database to use for IP to ASN mapping (if enabled)
-      --periods P      Hold this many 60 second time periods of history in memory [default: 5]
-      --summary        Instead of a time window with P periods, summarize all packets into one bucket for entire time period.
-                       Useful for executive summary of (and applicable only to) a pcap file. [default: false]
-      -H HOSTSPEC      Specify subnets (comma separated) to consider HOST, in CIDR form. In live capture this /may/ be detected automatically
-                       from capture device but /must/ be specified for pcaps. Example: "10.0.1.0/24,10.0.2.1/32,2001:db8::/64"
-                       Specifying this for live capture will append to any automatic detection.
-      -h --help        Show this screen
-      --version        Show version
+      -p PORT               Run metrics webserver on the given localhost port [default: 10853]
+      -b BPF                Filter packets using the given BPF string
+      --geo-city FILE       GeoLite2 City database to use for IP to Geo mapping (if enabled)
+      --geo-asn FILE        GeoLite2 ASN database to use for IP to ASN mapping (if enabled)
+      --max-deep-sample N   Never deep sample more than N% of packets (an int between 0 and 100) [default: 100]
+      --periods P           Hold this many 60 second time periods of history in memory [default: 5]
+      --summary             Instead of a time window with P periods, summarize all packets into one bucket for entire time period.
+                            Useful for executive summary of (and applicable only to) a pcap file. [default: false]
+      -H HOSTSPEC           Specify subnets (comma separated) to consider HOST, in CIDR form. In live capture this /may/ be detected automatically
+                            from capture device but /must/ be specified for pcaps. Example: "10.0.1.0/24,10.0.2.1/32,2001:db8::/64"
+                            Specifying this for live capture will append to any automatic detection.
+      -h --help             Show this screen
+      --version             Show version
 
 ```