Automate dependency update

[goldhand]

Currently using npm-check-updates to check for dependecy updates and comparing the diff. Would be super nice to automate this process somehow...

Documenting current process:

1. Create a cookiecutter-webpack project with default options (would be nice to test all options).

$ cookiecutter [email protected]:hzdg/cookiecutter-webpack.git

1. enter new project (project_name) is default and create a new git repository and commit everything.

$ cd project_name/
$ git init
$ git add .
$ git commit -m 'Init'

1. Run npm-check-updates tool to update package.json to latest dependencies

$ ncu -uat

1. Compare diff and update cookiecutter-webpack/{{cookiecutter.repo_name}}/package.json file with new dependencies.

$ git diff

[jayfk]

What about https://greenkeeper.io/?

[goldhand]

Thanks @jayfk, this looks like what we need :smile: