Additional output options

## Getting output

The are three primary formats for output. The first is XML, which products

fairly large files, but is easy to import into anything. Just use the

parameter `-oX <filename>`. Or, use the parameters `--output-format xml` and

`--output-filename <filename>`.

The are five primary formats for output. 

1. xml: The default option also prodces fairly large files, but is easy 

	to import into anything. Just use the parameter `-oX <filename>`. 

	Or, use the parameters `--output-format xml` and `--output-filename <filename>`.

The second is the binary format. This produces much smaller files, so that

2. binary: This is the masscan builtin format. This produces much smaller files, so that

when I scan the Internet my disk doesn't fill up. They need to be parsed,

though. The command line option `--readscan` will read binary scan files.

Using `--readscan` with the `-oX` option will produce a XML version of the 

results file.

The third is the grepable format. This is an implementation of the Nmap -oG

3. grepable: This is an implementation of the Nmap -oG

output and can be easily parsed by command-line tools. Just use the

parameter `-oG <filename>`. Or, use the parameters `--output-format grepable` and

`--output-filename <filename>`.

4. json: This saves the results in a json format. Just use the

parameter `-oJ <filename>`. Or, use the parameters `--output-format json` and

`--output-filename <filename>`.

5. list: This is a simple list with one host and port pair 

per line. Just use the parameter `-oL <filename>`. Or, use the parameters 

`--output-format list` and `--output-filename <filename>`. The format is:

	```

	<port state> <protocol> <port number> <IP address> <POSIX timestamp>  

	open tcp 80 XXX.XXX.XXX.XXX 1390380064

	```	

## Comparison with Nmap