Market

- add Quote

market.go

@@ -27,6 +27,7 @@ type Market interface {
 	PortfolioHistory() ([]PortfolioRecord, error)
 
 	HistoricalBars(symbol string, interval time.Duration, from *time.Time) ([]Bar, error)
+	Quote(symbol string) (Quote, error)
 
 	Account() (MarketAccount, error)
 	MaxBudget() float64

quote.go

@@ -0,0 +1,9 @@
+package sentio
+
+type Quote struct {
+	AskPrice float64
+	AskSize  int
+
+	BidPrice float64
+	BidSize  int
+}