Simple cross platform shell script that can add license information to the current directory with a:

Mac/Linux:

./license-this.sh

or

Windows:

license-this.ps1

Creates a LICENSE file in the current directory, if one does not exist. Will also create a README.md with short license information if one does not exist. If one does it will prompt you to add short license info at end of file. This short information will include a shields.io badge see here

Add the license-this script (either ps1 for windows or sh for linux/mac) into your environment path.

Set your license information by editing the script variables at the top of the script.

To add new licenses see license-gallery.sh for some sample permissive licenses or select an OSI approved license from here and its corresponding badge from here