Add imports to README

README.md

@@ -10,6 +10,10 @@ Small utility for adding database support to your dlayer schema, using Knex, wit
 ## Realistic-ish example
 
 ```js
+const knex = require("knex");
+const dlayer = require("dlayer");
+const dlayerKnex = require("dlayer-knex");
+
 let db = knex(require("./knexfile").development);
 
 let knexUsers = await dlayerKnex.generateModule(db, "users");