diff --git a/README.md b/README.md
index ec9ac82..e054480 100644
--- a/README.md
+++ b/README.md
@@ -1,14 +1,94 @@
 # geoip-server
+[![Build](https://github.com/tpyo/geoip-server/actions/workflows/build.yml/badge.svg)](https://github.com/tpyo/geoip-server/actions/workflows/build.yml)
+
 Fast, lightweight MaxMind GeoIP lookup server written in Rust (experimental)
 
 ### Starting the server
 Usage: `./geoip-server localhost:3000 MaxMind-DB/test-data/GeoIP2-City-Test.mmdb`
 
 ### Querying
-Make a GET request to `http://localhost:3000/89.160.20.128`
+Make a GET request to http://localhost:3000
+```sh
+curl http://localhost:3000/89.160.20.128
+```
 
 Example response:
 ```json
-{"city":{"geoname_id":2694762,"names":{"de":"Linköping","en":"Linköping","fr":"Linköping","ja":"リンシェーピング","zh-CN":"林雪平"}},"continent":{"code":"EU","geoname_id":6255148,"names":{"de":"Europa","en":"Europe","es":"Europa","fr":"Europe","ja":"ヨーロッパ","pt-BR":"Europa","ru":"Европа","zh-CN":"欧洲"}},"country":{"geoname_id":2661886,"is_in_european_union":true,"iso_code":"SE","names":{"de":"Schweden","en":"Sweden","es":"Suecia","fr":"Suède","ja":"スウェーデン王国","pt-BR":"Suécia","ru":"Швеция","zh-CN":"瑞典"}},"location":{"accuracy_radius":76,"latitude":58.4167,"longitude":15.6167,"metro_code":null,"time_zone":"Europe/Stockholm"},"postal":null,"registered_country":{"geoname_id":2921044,"is_in_european_union":true,"iso_code":"DE","names":{"de":"Deutschland","en":"Germany","es":"Alemania","fr":"Allemagne","ja":"ドイツ連邦共和国","pt-BR":"Alemanha","ru":"Германия","zh-CN":"德国"}},"represented_country":null,"subdivisions":[{"geoname_id":2685867,"iso_code":"E","names":{"en":"Östergötland County","fr":"Comté d'Östergötland"}}],"traits":null}
+{
+  "city": {
+    "geoname_id": 2694762,
+    "names": {
+      "de": "Linköping",
+      "en": "Linköping",
+      "fr": "Linköping",
+      "ja": "リンシェーピング",
+      "zh-CN": "林雪平"
+    }
+  },
+  "continent": {
+    "code": "EU",
+    "geoname_id": 6255148,
+    "names": {
+      "de": "Europa",
+      "en": "Europe",
+      "es": "Europa",
+      "fr": "Europe",
+      "ja": "ヨーロッパ",
+      "pt-BR": "Europa",
+      "ru": "Европа",
+      "zh-CN": "欧洲"
+    }
+  },
+  "country": {
+    "geoname_id": 2661886,
+    "is_in_european_union": true,
+    "iso_code": "SE",
+    "names": {
+      "de": "Schweden",
+      "en": "Sweden",
+      "es": "Suecia",
+      "fr": "Suède",
+      "ja": "スウェーデン王国",
+      "pt-BR": "Suécia",
+      "ru": "Швеция",
+      "zh-CN": "瑞典"
+    }
+  },
+  "location": {
+    "accuracy_radius": 76,
+    "latitude": 58.4167,
+    "longitude": 15.6167,
+    "metro_code": null,
+    "time_zone": "Europe/Stockholm"
+  },
+  "postal": null,
+  "registered_country": {
+    "geoname_id": 2921044,
+    "is_in_european_union": true,
+    "iso_code": "DE",
+    "names": {
+      "de": "Deutschland",
+      "en": "Germany",
+      "es": "Alemania",
+      "fr": "Allemagne",
+      "ja": "ドイツ連邦共和国",
+      "pt-BR": "Alemanha",
+      "ru": "Германия",
+      "zh-CN": "德国"
+    }
+  },
+  "represented_country": null,
+  "subdivisions": [
+    {
+      "geoname_id": 2685867,
+      "iso_code": "E",
+      "names": {
+        "en": "Östergötland County",
+        "fr": "Comté d'Östergötland"
+      }
+    }
+  ],
+  "traits": null
+}
 ```