ci(release-drafter): add release-drafter config (#2)

* docs(readme): fix gopher image

* ci(release-drafter): add release-drafter config

.github/release-drafter.yml

@@ -0,0 +1,20 @@
+name-template: v$NEXT_PATCH_VERSION 🌈
+categories:
+  - title: 🚀 Features
+    labels:
+      - feature
+      - enhancement
+  - title: 🐛 Bug Fixes
+    labels:
+      - bug
+  - title: 🔖 Documentation
+    labels:
+      - documentation
+  - title: 🧰 Maintenance
+    label:
+      - ci
+      - chore
+template: |
+  ## Changes
+
+  $CHANGES

readme.md

@@ -2,7 +2,9 @@
 
 The package gqlclient provides a GraphQL client implementation.
 
-![./gopher.svg](https://github.com/MariaLetta/free-gophers-pack)
+<p align="center">
+	<img src="./gopher.svg"  alt="GraphQL Gopher" height="350" />
+</p>
 
 - Simple, familiar API
 - Use strong Go types for response and variables