更新 'README.md'

README.md

@@ -1,6 +1,11 @@
+## 图标库
+
+https://github.com/mapbox/maki.git
 
 
-新建数据类型
+
+
+## 新建数据类型
 
 data/presets/xxx/yyyy.json
 
@@ -14,6 +19,31 @@ dist/presets.json
 dist/taginfo.json
 
 
+## 选项 
+
+* 下拉菜单 
+
+dronesstationmode.json
+
+id-tagging-schema/data/fields/dronesstationmode.json
+
+```
+{
+    "key": "dronesstationmode",
+    "type": "combo",
+    "label": "dronesstationmode",
+    "strings": {
+        "options": {
+            "A": "A",
+            "B": "B",
+            "C": "C"
+        }
+    }
+}
+
+
+
+```
 
 
 ![test](https://github.com/openstreetmap/id-tagging-schema/workflows/test/badge.svg) [![npm version](https://badge.fury.io/js/%40openstreetmap%2Fid-tagging-schema.svg)](https://badge.fury.io/js/%40openstreetmap%2Fid-tagging-schema)