Add --no-rates to disable fetching of currency exchange rates

app/utils.js

@@ -276,6 +276,8 @@ function getBlockTotalFeesFromCoinbaseTxAndBlockHeight(coinbaseTx, blockHeight)
 }
 
 function refreshExchangeRates() {
+	if (process.env.BTCEXP_NO_RATES) return;
+
 	if (coins[config.coin].exchangeRateData) {
 		request(coins[config.coin].exchangeRateData.jsonUrl, function(error, response, body) {
 			if (!error && response && response.statusCode && response.statusCode == 200) {

bin/cli.js

@@ -18,6 +18,7 @@ const args = require('meow')(`
 
       --cookie-secret <secret>     secret key for signed cookie hmac generation [default: hmac derive from bitcoind pass]
       --demo                       enable demoSite mode [default: disabled]
+      --no-rates                   disable fetching of currency exchange rates [default: enabled]
 
       --ipstack-key <key>          api access key for ipstack (for geoip) [default: disabled]
       --ganalytics-tracking <tid>  tracking id for google analytics [default: disabled]