update example

examples/ws/ticker/main.go

@@ -7,14 +7,25 @@ import (
 )
 
 func main() {
+	markets, err := bitvavo.NewHttpClient().GetMarkets()
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	tradingMarkets := make([]string, 0)
+	for _, market := range markets {
+		if market.Status == "trading" {
+			tradingMarkets = append(tradingMarkets, market.Market)
+		}
+	}
+
 	ws, err := bitvavo.NewWsClient()
 	if err != nil {
 		log.Fatal(err)
 	}
-	tickerchn, err := ws.Ticker().Subscribe([]string{"ETH-EUR",
-		"1INCH-EUR", "AAVE-EUR", "ACH-EUR", "ADA-EUR", "ADX-EUR",
-		"AE-EUR", "AGIX-EUR", "AION-EUR", "AKRO-EUR",
-	})
+
+	// subscribe to all available 'trading' markets
+	tickerchn, err := ws.Ticker().Subscribe(tradingMarkets)
 	if err != nil {
 		log.Fatal(err)
 	}