babel-plugin-banner 
Prepends given comment to the beginning of babelified code.
Installation
npm install @comandeer/babel-plugin-banner [--save-dev]
Usage
{
"presets": ["es2015"],
"plugins": [
["@comandeer/babel-plugin-banner", {
"banner": "/*! Some nice comment */"
}]
]
}
License
See LICENSE file for details.