CLI Command Find Not Parsing --retrieve Option

[greaterweb]

The --retrieve option is not being parsed correctly.

$ portastic find 3000 3100 -r 1
Unhandled rejection Error: listen EACCES 0.0.0.0:1
    at Object.exports._errnoException (util.js:870:11)
    at exports._exceptionWithHostPort (util.js:893:20)
    at Server._listen2 (net.js:1224:19)
    at listen (net.js:1273:10)
    at net.js:1382:9
    at nextTickCallbackWith3Args (node.js:452:9)
    at process._tickCallback (node.js:358:17)
Unhandled rejection Error: listen EACCES 0.0.0.0:1
    at Object.exports._errnoException (util.js:870:11)
    at exports._exceptionWithHostPort (util.js:893:20)
    at Server._listen2 (net.js:1224:19)
    at listen (net.js:1273:10)
    at net.js:1382:9
    at nextTickCallbackWith3Args (node.js:452:9)
    at process._tickCallback (node.js:358:17)

The type appears to be missing in the option declaration which looks to be the problem. I'll create a PR to address the issue.

Related, the --retrieve option for find could probably stand to have some documentation to go along with it. I saw the API had the option available and only realized the CLI did as well when taking a look at the source. It looks like this might be a limitation of the commander library when options are defined for commands.

In any case, good work on the lib, it was exactly what I was looking for ;-)