Conform to ConfigInitializable

[mosamer]

This PR adds support for initializing Bob, TravisCI and GitHub using Vapor configs. This allows an initialization process that is more inline with other Vapor projects and tutorials.

[i-dama]

Great PR, thanks for your contribution 👍

Do you think it would make sense to move the config name "bob" into a constant?

[vincentaudoire]

Hi @mosamer , many thanks for your PR 🎊
I'm having some concern about security when storing the configurations inside a json file in the repo. Currently we're getting the various tokens (github-access-token, slack-token ...) from the environment variable.
If we encourage users to store their configurations inside a .json file and store it on their github repo, wouldn't that be a huge security threat for them?

WDYT?

[mosamer]

Hi @vincentaudoire, thanks for the review. I understand your security concerns but I feel they are already addressed.

• As mentioned in the Readme update, the json file should be added to your .gitignore. This way you can avoid storing your credentials on Github.
• If you still need to avoid adding the json file, you can pass these configs with CLI, using vapor run --config:bob.slack-token=<token>.