docs: update readme

README.md

@@ -1,44 +1,49 @@
+
 # Solana Sniper Bot
 This code is written as proof of concept for demonstrating how we can buy new tokens immediately after liquidity pool is created.
 
-Script listens to new raydium USDC/SOL pools and buys token for a fixed amount in USDC/SOL.
+Script listens to new raydium USDC/SOL pools and buys token for a fixed amount in USDC/SOL.  
 Depending on speed of RPC node, the purchase usually happens before token is available on Raydium UI for swapping.
 
-# Setup
+## Setup
 In order to run the script you need to:
 - Create a new empty Solana wallet
 - Transfer some SOL to it.
 - Convert some SOL to USDC or WSOL.
   - You need USDC or WSOL depending on configuration set below.
-- Set your 
+- Configure the script by updating `.env.copy` file (remove the .copy from the file name when done).
   - PRIVATE_KEY (your wallet private key)
   - RPC_ENDPOINT (https RPC endpoint)
   - RPC_WEBSOCKET_ENDPOINT (websocket RPC endpoint)
   - QUOTE_MINT (which pools to snipe, USDC or WSOL)
   - QUOTE_AMOUNT (amount used to buy each new token)
   - COMMITMENT_LEVEL
-
-  in the .env file (remove the .copy from the file name when done). 
-  Make sure to replace default values.
-
 - Install dependencies by typing: `npm install`
 - Run the script by typing: `npm run buy` in terminal
 
-You should see following output:
+You should see the following output:  
 ![output](output.png)
 
-# Support
+## Common issues
+If you have an error which is not listed here, please create a new issue in this repository.
 
-## Unsupported RPC node
-- If you see following error in your log file:
-`Error: 410 Gone:  {"jsonrpc":"2.0","error":{"code": 410, "message":"The RPC call or parameters have been disabled."}, "id": "986f3599-b2b7-47c4-b951-074c19842bad" }`
-it means your RPC node doesn't support methods needed to execute script.
+### Unsupported RPC node
+- If you see following error in your log file:  
+  `Error: 410 Gone:  {"jsonrpc":"2.0","error":{"code": 410, "message":"The RPC call or parameters have been disabled."}, "id": "986f3599-b2b7-47c4-b951-074c19842bad" }`  
+  it means your RPC node doesn't support methods needed to execute script.
   - FIX: Change your RPC node. You can use Helius or Quicknode.
 
-
-- If you see following error in your log file:
-`Error: No SOL token account found in wallet: `
-it means that wallet you provided doesn't have USDC/WSOL token account.
+### No token account
+- If you see following error in your log file:  
+  `Error: No SOL token account found in wallet: `  
+  it means that wallet you provided doesn't have USDC/WSOL token account.
   - FIX: Go to dex and swap some SOL to USDC/WSOL. For example when you swap sol to wsol you should see it in wallet as shown below:
 
-![wsol](wsol.png)
+![wsol](wsol.png)
+
+## Support
+If you want to support my work, you can donate to my Solana wallet:
+`DM5buFVo7Fc3h6fb9W2f43RNARxWAmpkA3eSRQGDDQfw`
+
+## Contact
+[![](https://img.shields.io/discord/1201826085655023616?color=5865F2&logo=Discord&style=flat-square)](https://discord.gg/xYUETCA2aP)