Parses and returns current Bitcoin price in the desired currency.

GetBTCPrice.js

//GetBTCPrice 
//Parses BTC price from a selected exchange. 
function GetBTCPrice(currency){   
//TODO: Change to a better exchange like Mt. Gox. ^_^   
  if (currency === null){currency = "usd";}   
  var url = "https://btc-e.com/api/2/btc_" + currency.toLowerCase() + "/ticker";
  var response = UrlFetchApp.fetch(url).getResponseCode();
  if (response == 200) 
  {
    var btcdata = UrlFetchApp.fetch(url).getContentText();
    var object = JSON.parse(btcdata);
    return object["ticker"]["sell"];
  } else {
    return "Server error";   
  } 
}