update readme

Author: jtomada

README.md

@@ -1,6 +1,8 @@
 # Jup DCA Bot
 This bot runs a simple dollar cost averaging strategy to buy assets over a period of time. It utilizes [Jupiter Aggregator](https://jup.ag), a swap aggregator on Solana.
 
+This code is unaudited. Please use at your own risk!
+
 Based on the [Jupiter Core Example](https://github.com/jup-ag/jupiter-core-example)
 
 ## Install
@@ -13,6 +15,9 @@ Create an `.env` file to store private info. Add the variables below.
 CLUSTER=mainnet-beta
 WALLET_PRIVATE_KEY=abc123def456
 ```
+Create your own `dcaconfig.ts`. See `dcaconfig-example.ts` for a template. 
+
+To see example cron expressions, check out [cronotab guru](https://crontab.guru/).
 ## Run
 ```
 yarn start