Update redisGraphAPITest.js

Author: gkorland

test/redisGraphAPITest.js

@@ -5,6 +5,8 @@ RedisGraphAPI = require('../src/redisGraph');
 
 describe('RedisGraphAPI Test', () =>{
 	const api = new RedisGraphAPI("social");
+	// Dummy create to make sure first delete won't fail
+	api.query("CREATE ({name:'roi',age:32})");
 
 	beforeEach( () => {
 		return api.deleteGraph();