Update vendor

vendor/github.com/nlopes/slack/examples/team/team.go

@@ -0,0 +1,25 @@
+package main
+
+import (
+	"fmt"
+
+	"github.com/nlopes/slack"
+)
+
+func main() {
+	api := slack.New("YOUR_TOKEN_HERE")
+  //Example for single user
+	billingActive, err := api.GetBillableInfo("U023BECGF")
+	if err != nil {
+		fmt.Printf("%s\n", err)
+		return
+	}
+	fmt.Printf("ID: U023BECGF, BillingActive: %v\n\n\n", billingActive["U023BECGF"])
+
+  //Example for team
+  billingActiveForTeam, err := api.GetBillableInfoForTeam()
+  for id, value := range billingActiveForTeam {
+    fmt.Printf("ID: %v, BillingActive: %v\n", id, value)
+  }
+
+}