Rename db sample config file to more logical name

config/db.sample.json

@@ -0,0 +1,10 @@
+{
+        "host": "hostname",
+        "port": 1111,
+        "user": "username",
+        "password": "password",
+        "database": "dbname",
+	"waitForConnections": true,
+	"connectionLimit": 10,
+	"queueLimit": 0
+}