Add vendor (steam)

vendor/github.com/Philipp15b/go-steam/jsont/jsont.go

@@ -0,0 +1,19 @@
+// Includes helper types for working with JSON data
+package jsont
+
+import (
+	"encoding/json"
+)
+
+// A boolean value that can be unmarshaled from a number in JSON.
+type UintBool bool
+
+func (u *UintBool) UnmarshalJSON(data []byte) error {
+	var n uint
+	err := json.Unmarshal(data, &n)
+	if err != nil {
+		return err
+	}
+	*u = n != 0
+	return nil
+}