A --help argument would help

[GoogleCodeExporter]

What steps will reproduce the problem?
1. ./jvmtop.sh --help

jvmtop has several arguments that can only be learned through looking at a few 
different pages in the wiki - since there is no source code, hard to know if 
they are all documented anywhere.

What is the expected output? What do you see instead?

[me@localhost~]$ jvmtop --help

JvmTop 0.7.1 alpha, http://code.google.com/p/jvmtop
Usage: info [OPTIONS]... [PID]

Monitor JVM metrics on the command line

Options (only one can be specified):
  --help                this text
  --once  [PID]      Run jvmtop one time, then exit
  --delay N           Delay N seconds between updates
  --profile PID      Profile a specifc JVM instance

Examples:
   jvmtop             Summarize all currently running JVM's
   jvmtop 3944    Display detailed information for a single JVM (pid #3944)
   jvmtop --delay 3 --profile 3944
                           Profile process #3944, updating the display every 3 seconds

Plus appending what you currently have written up for the column definitions on 
the ExampleOutput wiki page would be a nice touch.  


or for an unknown argument:

[me@localhost~]$ jvmtop --foo
jvmtop: unrecognized option '--foo'
Try --help for more information.


Actual:
[me@localhost~]$ jvmtop --help
Exception in thread "main" java.lang.NumberFormatException: For input string: 
"--help"
    at java.lang.NumberFormatException.forInputString(NumberFormatException.java:65)
    at java.lang.Integer.parseInt(Integer.java:492)
    at java.lang.Integer.parseInt(Integer.java:527)
    at com.jvmtop.JvmTop.main(JvmTop.java:122)

Original issue reported on code.google.com by DaveParillo on 8 Aug 2013 at 11:49