crud-service-docs.markdown

 ### Get Poi in bounds
 
-get http://172.16.20.63:3000/poi/:zoom/:nwlng/:nwlat/:selng/:selat?code=["catecodeid1","catecodeid2"]
+get http://172.16.20.63:3000/poi/:zoom/:nwlng/:nwlat/:selng/:selat?category=["catecodeid1","catecodeid2"]
+
+> http://172.16.20.63:3000/poi/0/0/0/0/0?category=["10020101","203030101","10040601"]
 
 response
 
@@ -20,6 +22,13 @@ response
           ]          
 ```
 
+How to render category
+```javascript
+var categoryList = [];
+categoryList.push('0000001')
+categoryList.push('0000001')
+var str = '?category=' + JSON.stringify(categoryList);
+```
 
 ### delete poi