JSON-CSV converter

This simple library convert JSON to CSV and CSV to JSON

#### JSON to CSV
``javascript
let converter=new JSONtoCSV(jsonObject,";")
converter.convert() //return a promise
`
In JSONtoCSV the first argument must be an array of JSON objects

#### CSV to JSON
`javascript
let converter=new CSVtoJSON(csvString,";")
converter.convert() //return a promise
`
CSVtoJSON accept as third argument the path of a CSV file

In both JSONtoCSV and CSVtoJSON the second argument is the delimiter for CSV, the default one is , (coma).

#### Example
``javascript
const {JSONtoCSV} = require("jsontocsv-csvtojson")

let jsonObject=[{
NAME: "Luke",
AGE: 20
},
{
NAME: "Fernando",
AGE: 41
}]
let converter=new JSONtoCSV(jsonObject,";")
converter.convert()
.then(csv=>{
console.log(csv)
/**
* csv will be:
*
* NAME;AGE
* Luke;20
* Fernando;41
*
/
})