Add S3 examples

.config/example.yml

@@ -68,6 +68,29 @@ drive:
   #   accessKey:
   #   secretKey:
 
+  # S3 example
+  # storage: 'minio'
+  # bucket: bucket-name
+  # prefix: files
+  # config:
+  #   endPoint: s3-us-west-2.amazonaws.com
+  #   region: us-west-2
+  #   secure: true
+  #   accessKey: XXX
+  #   secretKey: YYY
+
+  # S3 example (with CDN, custom domain)
+  # storage: 'minio'
+  # bucket: drive.example.com
+  # prefix: files
+  # baseUrl: https://drive.example.com
+  # config:
+  #   endPoint: s3-us-west-2.amazonaws.com
+  #   region: us-west-2
+  #   secure: true
+  #   accessKey: XXX
+  #   secretKey: YYY
+
 #
 # Below settings are optional
 #