Create exchange base struct

exchanges/exchange.go

@@ -0,0 +1,21 @@
+package exchange
+
+import (
+	"time"
+)
+
+type ExchangeBase struct {
+	Name                        string
+	Enabled                     bool
+	Verbose                     bool
+	Websocket                   bool
+	RESTPollingDelay            time.Duration
+	AuthenticatedAPISupport     bool
+	APISecret, APIKey, ClientID string
+	TakerFee, MakerFee, Fee     float64
+	BaseCurrencies              []string
+	AvailablePairs              []string
+	EnabledPairs                []string
+	WebsocketURL                string
+	APIUrl                      string
+}