Create "init" script

[tommmyy]

union-scripts init:basic

• clones boilerplates/react-union-boilerplate-basic and runs yarn install.
• user should be able to customize name of the project.
• other features are surely welcome

[jamescoq]

I suggest to consider a plob generator as a suitable tool. https://github.com/amwmedia/plop

[tommmyy]

@foxyq any progress? :)