app.json
{
"name": "helloBooks",
"scripts": {},
"env": {
"DATABASE_URL": {
"required": true
},
"NODE_ENV": {
"required": true
},
"NODE_MODULES_CACHE": {
"required": true
},
"SECRET": {
"required": true
}
},
"formation": {},
"addons": [
"papertrail"
],
"buildpacks": [
{
"url": "heroku/nodejs"
}
]
}