.eslintrc configuration file?

[XIAIX-code]

So I installed Node.js (would have been nice to include that step in the instructions).
After installing Node.js, I successfully installed ESLint (npm i eslint --save-dev).
I then successfully installed eslint-plugin-servicenow (npm install eslint-plugin-servicenow --save-dev).
Now I'm looking at the "Usage" section where it tells me to:

Add servicenow to the plugins section of your .eslintrc configuration file.

Where do I find this file!?