Provide an example for check command

[davidhsingyuchen]

Summary

PR fixes #160 (comment).

Notes

• The usage of **Tip** comes from

  go-licenses/README.md

  Line 86 in 6073243

  **Tip**: go-licenses writes the report to stdout and info/warnings/errors logs

• --include_test is also added because that's the very reason why I created Add include_tests flag for deps only used in tests #160, and Add include_tests flag for deps only used in tests #160 (comment) also mentions:

  I would use the flag when running check, because all deps must be allowed.

• I thought about putting this section after those of the flags (e.g., --disallowed_types), but I feel that go-licenses check --include_tests github.com/your-org/your-repo/... is potentially a template command that suits most use cases (i.e., users only need to replace the placeholders to make the command work for them), so I put it right after the intro of check. No strong opinion though.

[davidhsingyuchen]

Remove the trailing space. Github is not showing it probably because this line belongs to the same chunk as the modified lines below.

[Bobgy]

make it clear add ... to package

[davidhsingyuchen]

Hmm, but the repository root is not necessarily an importable package.

[Bobgy]

not sure I understand your comment, as your linked doc ... means a pattern to match packages, root does not need to be a package.

[davidhsingyuchen]

I thought you meant that I should change to "... to package (i.e., github.com/google/go-licenses) to check all the packages in your repository", but maybe I misunderstood your point.

[Bobgy]

ohh, I was not clear. let me clarify. I think this sentence lacks some context. It does not tell where to add ...

so I am asking you to make the sentence more complete. Add description that ... is appended to the end of an import path to include all packages matching that pattern.

[davidhsingyuchen]

Thank you for the clarification! Fixed in 1d973cb.

[Bobgy]

Awesome!