add tips section to easycozy

docs/easycozy/tips.md

+# Tips
+
+## Query data from an instance
+
+For maintenance reason, we sometime need to check data on a specific instance. For that we use postman to send get / post / delete data.
+All posibility are described in the [data section of Cozy documentation](https://docs.cozy.io/en/cozy-stack/data-system/).
+
+**Example**
+
+The example will describ how to query userChallenge data from an instance.
+First, you need to be able to connect to the instance in order to retrive the bearer and the cozysessid.
+
+![Bearer&cozysessid](/img/bearer_cozysessid.png)
+
+Then use postman to query the data:
+```
+Verb: GET
+Request: https://ecolyotest.cozy.self-data.alpha.grandlyon.com/data/com.grandlyon.ecolyo.userchallenge/_all_docs?include_docs=true
+Header: 
+    Accept: application/json
+    content-type: application/json
+    Authorization: Bearer xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+    Cookie: cozysessid=AAAAAxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+```
+
+The result will then be retrieve by postman:
+```
+{
+    "total_rows": 1,
+    "offset": 0,
+    "rows": [
+        {
+            "id": "a353b985c0c5f09229b0acd6b2f37f1b",
+            "key": "a353b985c0c5f09229b0acd6b2f37f1b",
+        ...
+    ]
+}
+```
\ No newline at end of file

mkdocs.yml

@@ -27,6 +27,7 @@ nav:
     - Easy Cozy:
         - Scripts: easycozy/scripts.md
         - Commands: easycozy/commands.md
+        - Tips: easycozy/tips.md
     - Ecolyo:
         - Introduction: ecolyo/index.md
         - Getting started: