Update help text and README.md

README.md

@@ -21,6 +21,7 @@ tiling Wayland compositor](https://swaywm.org).
       --netdev=<device_name>				Check network traffic on specified device
       --netdev_width=<width>				Sets the min-width of the netdev output (default 10)
       --netgraph_max_bytes=<bytes>				Enable "graph" output when polling network traffic
+                                  				  (Set to "dynamic" instead of a byte count for dynamic sizing)
       --interval-sec=<seconds>				Output at intervals of <seconds> (default 5)
       --acpi-builtin					Use "acpi -b" built-in fetching (battery info, with color)
       --regex-cmd=<cmd>[SPLIT]<args...>[SPLIT]<regex>	Use an output of a command as a metric
@@ -107,6 +108,10 @@ characters](https://en.wikipedia.org/wiki/Block_Elements)). Thus, this outputs
 a history graph of network traffic. A sane value for `<bytes>` can be 1048576,
 which is 1 MiB.
 
+Specify "dynamic" instead of a bytecount (such as
+`--netgraph_max_bytes=dynamic`) to have the graph dynamically resize based on
+the maximum amount of bytes transferred in an interval.
+
 ## Dependencies
 
 Uses [`serde_json`](https://crates.io/crates/serde_json),

src/args.rs

@@ -64,6 +64,9 @@ pub fn print_usage() {
     stderr_handle
         .write_all(b"  --netgraph_max_bytes=<bytes>\t\t\t\tEnable \"graph\" output when polling network traffic\n")
         .ok();
+    stderr_handle
+        .write_all(b"                              \t\t\t\t  (Set to \"dynamic\" instead of a byte count for dynamic sizing)\n")
+        .ok();
     stderr_handle
         .write_all(
             b"  --interval-sec=<seconds>\t\t\t\tOutput at intervals of <seconds> (default 5)\n",