Merge pull request #4 from zkFold/2-add-readme

Added README

Author: ajuggler

README.md

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+# zkFold x zkPass: Bring zkPass to Cardano
+
+**zkPass** on Cardano is a smart contract that enables developers to post, verify, and utilize zkPass oracle attestations on the Cardano blockchain. It is a tool that makes new types of DApps possible on Cardano.
+
+This repository contains code to construct transactions for the zkPass smart contract.  (Relevant executables are described [here](https://github.com/zkFold/zkpass-cardano/blob/main/backends/README.md).)

backends/README.md

@@ -1,5 +1,4 @@
 # Off-chain code for `zkPassToken`
 
-1. `zkPassToken-init-transaction` writes the related Plutus scripts (UPLC code) to files in CBOR format.
+1. `zkPassToken-init-transaction` writes the related Plutus scripts (UPLC code) to files in CBOR format. It also writes token's policy id to a file in CBOR format.
 2. `zkPassToken-minting-transaction` constructs the data items used as script parameters and writes them to files in CBOR format.
-3. `zkPassToken-transfer-transaction` writes token's policy id to a file in CBOR format.