load: Add ability to specify custom config file (reboot). fixes #755

[knksmith57]

Per original PR / conversation by @kentcdodds & @remy in #755, this implements
the --config <file> option allowing users to load an arbitrary config file
instead of being bound to the default $PWD/nodemon.json.

Patch includes:

• --config option parsing
• Documentation updates
• light (maybe sufficient?) unit test coverage

[knksmith57]

tests pass but it looks like my commit message violates the rules for this repo; I'mma try and figure out where those are documented (not familiar with this ci/semantic-release witchcraft)

[knksmith57]

found it: https://github.com/angular/angular.js/blob/master/CONTRIBUTING.md#commit-message-format, pushing that change now

[knksmith57]

cool, looks like that passes now. commit message guidelines are a beautiful thing 😃

[LoicMahieu]

Really interested in this feature!
In fact I wish nodemon looks recursively for nodemon.json in parent folders but at least a --config should do the job! ;)

[knksmith57]

@remy when you have a chance, would love some feedback on this one

[knksmith57]

heya @remy, any chance we can get a code review on this one when you have a chance?

[knksmith57]

thanks sir!