Price API

Using the coindesk API, https://api.coindesk.com/v1/bpi/historical/close.json, for the last 30 days of BTC prices:

1. Define a new BitcointPriceIndex type that describes the data returned by the API

2. Fetch the API data and parse the result. We want the data to have the type BitcointPriceIndex after this point.

3. Find the highest price in the last month, and print the date it occurred using the moment format MMMM Do (e.g. "June 3rd"). (If the price happened twice, use the first date it occurred)

This exercise covers materials from the sections: types, syntax, collections, functions.