Combine the 2 md-seed config files or allow to define location on run

[JoshWhiting]

It seems a little overkill to require 2 config files for a seeder library at the root of a project. With an already way to many requirements of app, env, build, test files required at the project root can you at least combine the 2 file requirements into 1? i.e. md-seed-config.js has all the data required for your library?

If not, can you allow to define the config file location when running the md-seed command? i.e. md-seed --config='./server/seeds/seed-config.js'

[sharvit]

Thank you for filling this issue @JoshWhiting 👍

I will see if I can join them to one config file in version-2 #13

It also make sense to allow changing the config path and from the package.json