message: docs: add readme note
diff: @@ -80,6 +80,7 @@ import { makeECPrivateKey, publicKeyToAddress } from '@stacks/encryption';
  import { SECP256K1Client } from 'jsontokens';
  const privateKey = makeECPrivateKey();
  +// Private key is also usable with the jsontokens package
  const publicKey = SECP256K1Client.derivePublicKey(privateKey);
  const address = publicKeyToAddress(publicKey);
  console.log(address);
  