Fixed #988

Signed-off-by: Vishal Rana <vr@labstack.com>

bind.go

@@ -94,6 +94,13 @@ func (b *DefaultBinder) bindData(ptr interface{}, data map[string][]string, tag
 	typ := reflect.TypeOf(ptr).Elem()
 	val := reflect.ValueOf(ptr).Elem()
 
+	if m, ok := ptr.(*map[string]interface{}); ok {
+		for k, v := range data {
+			(*m)[k] = v[0]
+		}
+		return nil
+	}
+
 	if typ.Kind() != reflect.Struct {
 		return errors.New("binding element must be a struct")
 	}