Chainlink External Adapter for Chainlink-challenge

A template to be used as an example for new External Adapters

(please fill out with corresponding information)

An example adapter description

Required?	Name	Description	Options	Defaults to
	API_KEY	An API key that can be obtained from the data provider's dashboard (add a ✅ in `Required?` if this parameter is required)

Required?	Name	Description	Options	Defaults to
	endpoint	The endpoint to use	example	example

Chainlink-challenge Endpoint

An example endpoint description

Required?	Name	Description	Options	Defaults to
✅	`base`, `from`, or `coin`	The symbol of the currency to query	`BTC`, `ETH`, `USD`
✅	`quote`, `to`, or `market`	The symbol of the currency to convert to	`BTC`, `ETH`, `USD`

{
  "id": "1",
  "data": {
    "base": "ETH",
    "quote": "USD"
  }
}

{
  "jobRunID": "278c97ffadb54a5bbb93cfec5f7b5503",
  "data": {
    "price": 77777.77,
    "result": 77777.77
  },
  "statusCode": 200
}