Usage when improper command

[zendern]

• What are you trying to do? Nancy should show usage when improper command is passed.

• What feature or behavior is this required for?

  zender [projects/oss/nancy]  master ✔ → nancy thisaintright                                                                                        [a76019e]
  open /Users/zender/.ossindex/.oss-index-config: no such file or directory
  __  __
  /\ \/\ \
  \ \ `\\ \      __       ___      ___    __  __
  \ \ , ` \   /'__`\   /' _ `\   /'___\ /\ \/\ \
  \ \ \`\ \ /\ \L\.\_ /\ \/\ \ /\ \__/ \ \ \_\ \
  \ \_\ \_\\ \__/.\_\\ \_\ \_\\ \____\ \/`____ \
  \/_/\/_/ \/__/\/_/ \/_/\/_/ \/____/  `/___/> \
                                          /\___/
                                          \/__/
  _        _                           _    _
  /_)      /_` _  _  _ _/_     _  _    (/   /_` _ . _  _   _/  _
  /_) /_/  ._/ /_// //_|/  /_/ /_//_'  (_X  /   / / /_'/ //_/ _\
  _/                   _/ /
  Nancy version: development
  zender [projects/oss/nancy]  master ✔ →

• How could we solve this issue? (Not knowing is okay!) I think when we introduced nancy config we only look for that value. We should tell users when they type it in wrong (cause I know i did :) ) what the correct usage is like we do when you type an incorrect flag.

zender [projects/oss/nancy]  master ✔ → nancy --thisaintright                                                                                      [a76019e]
open /Users/zender/.ossindex/.oss-index-config: no such file or directory
flag provided but not defined: -thisaintright
Usage:
    go list -m all | nancy [options]
    go list -m all | nancy iq [options]
    nancy config
    nancy [options] </path/to/Gopkg.lock>
    nancy [options] </path/to/go.sum>

Options:
  -clean-cache
        Deletes local cache directory
  -exclude-vulnerability value
        Comma separated list of CVEs to exclude
  -exclude-vulnerability-file string
        Path to a file containing newline separated CVEs to be excluded (default "./.nancy-ignore")
  -help
        provides help text on how to use nancy
  -no-color
        indicate output should not be colorized
  -output string
        Styling for output format. ["json-pretty" "text" "csv" "json"] (default "text")
  -quiet
        indicate output should contain only packages with vulnerabilities
  -token string
        Specify OSS Index API token for request
  -user string
        Specify OSS Index username for request
  -v    Set log level to Info
  -version
        prints current nancy version
  -vv
        Set log level to Debug
  -vvv
        Set log level to Trace

• Anything else?

cc @bhamail / @DarthHater

[zendern]

@bhamail do you think #134 would clean this up too??

[bhamail]

@bhamail do you think #134 would clean this up too??

@zendern Yes, good point. I do think the move to Cobra commands will fix this issue.

[deadlysyn]

Just confirming, hunting around for hacktoberfest ideas and it sounds like there is no work left to do here after #134 is completed?

[bhamail]

@deadlysyn Correct. I would say this is fixed by #161