Updated config examples.

config_examples/mysql_config.json

@@ -0,0 +1,20 @@
+{
+  "connection_details": {
+    "engine": "mysql",
+    "host": "the-sql-host",
+    "port": 3306,
+    "user": "your_user",
+    "password": "your_password",
+    "schema": "comprea"
+  },
+  "queries_to_measure": [
+    {
+      "name": "Fast Smoke Test",
+      "query_string": "SELECT 1"
+    },
+    {
+      "name": "Delivered carts on a day",
+      "query_string": "select * from comprea.cart c where c.status = 'delivered' and c.date_delivered >= UNIX_TIMESTAMP(date('2022-05-24'))"
+    }
+  ]
+}