Authored by 姜枫

add pm2 start config. and we can start&reload application use `pm2 startOrReload process.json`

{
"apps": [
{
"name": "yohobuywap-node",
"script": "app.js",
"instances": "max",
"exec_mode": "cluster",
"env": {
"PORT": 6001
}
}
]
}
\ No newline at end of file
... ...