docs: added comments to the parse-redstone-payload script

scripts/parse-redstone-payload.js

@@ -2,6 +2,15 @@ const redstone = require("redstone-protocol");
 const { BigNumber } = require("ethers");
 const { arrayify, hexlify, toUtf8String } = require("ethers/lib/utils");
 
+// This script can be used to parse transaction calldata with a valid redstone payload
+// and print its details. To use it you should replace the value of the `TX_CALLDATA`
+// constant and launch this script from the root folder using the following command
+// `npx hardhat run scripts/parse-redstone-payload.js`
+
+// Sometimes you can receive overflow errors due to the shortcomings in the parsing
+// implementation. As a temporary solution, you can try to play with redstone-sdk and
+// redstone-protocol code in the node_modules
+
 const TX_CALLDATA = "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";
 const LONG_LINE = "------------------------------------------------------------------------";