chore: add insight query example to README

Author: rnons

README.md

@@ -10,10 +10,11 @@ pnpm add @sentio/api
 
 ## Usage
 
+### Example 1: get project list
+
 ```ts
 import { Configuration, WebApi } from "@sentio/api";
 
-
 const config = new Configuration({
   apiKey: process.env.SENTIO_API_KEY,
 });
@@ -22,6 +23,52 @@ const projects = await api.getProjectList();
 console.log(projects);
 ```
 
+### Example 2: insight query
+
+```ts
+import { Configuration, WebApi, DataApi } from "@sentio/api";
+
+const config = new Configuration({
+  apiKey: process.env.SENTIO_API_KEY,
+});
+
+const dataApi = new DataApi(config);
+const res = await dataApi.query({
+  owner: "sentio",
+  slug: "coinbase",
+  body: {
+    timeRange: {
+      start: "now-30d",
+      end: "now",
+      step: 3600,
+      timezone: "America/Los_Angeles",
+    },
+    limit: 20,
+    queries: [
+      {
+        metricsQuery: {
+          query: "cbETH_price",
+          alias: "",
+          id: "a",
+          labelSelector: {},
+          aggregate: null,
+          functions: [],
+          disabled: false,
+        },
+        dataSource: "METRICS",
+        sourceName: "",
+      },
+    ],
+    formulas: [],
+    cachePolicy: {
+      noCache: false,
+      cacheTtlSecs: 1296000,
+      cacheRefreshTtlSecs: 1800,
+    },
+  },
+});
+```
+
 ## Documentation
 
 [Sentio API Reference](https://docs.sentio.xyz/reference)