analyze.py usage example isn't correct

[edmorley]

STR:

1. ./analyze.py --help
2. Run the example ./analyze.py mozilla.org

Expected:
The example (or another domain substituted in) works.

Actual:

$ ./analyze.py mozilla.org
usage:
* Analyze a single target, invokes cipherscan: $ ./analyze.py -t [target]
* Evaluate json results passed through stdin:  $ python analyze.py < target_results.json
example: ./analyze.py mozilla.org
analyze.py: error: argument infile: can't open 'mozilla.org': [Errno 2] No such file or directory: 'mozilla.org'

I was going to just fix the usage example here:
https://github.com/jvehent/cipherscan/blob/18b0d1b952d027d20e38f07329817873ec077d26/analyze.py#L456

...however ideally the -t parameter would not be necessary, and the example as phrased would just work. Perhaps if the item passed as the first parameter doesn't exist as a file, analyze.py could prompt "Results file does not exist, is this a domain you wish to scan? [Yn]".

[jvehent]

I updated the example to show -t. Maybe in the future we can rewrite the argparser to not require it.

[edmorley]

Thank you :-)