Example Usage Templates

Wanted to get some thoughts about maybe adding templates for the Example Usage section, similar to the use of NOTES.md. As it stands now, this action overwrites the Example Usage section each time it runs, which is less than ideal.

I was thinking maybe an EXAMPLES.json file like the following:

```
{
"optionSets": [
{
"optionOne": "valueOne"
},
{
"optionTwo": "valueTwo"
}
]
}
```

If this seems agreeable, I could cook up a PR for this, I think.