add truffle migrations and config

contracts/Migrations.sol

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+// SPDX-License-Identifier: MIT
+pragma solidity >=0.4.22 <0.8.0;
+
+contract Migrations {
+  address public owner = msg.sender;
+  uint public last_completed_migration;
+
+  modifier restricted() {
+    require(
+      msg.sender == owner,
+      "This function is restricted to the contract's owner"
+    );
+    _;
+  }
+
+  function setCompleted(uint completed) public restricted {
+    last_completed_migration = completed;
+  }
+}

env.example

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+ENDPOINT=http://127.0.0.1:7545
+KEYSTORES_PATH=./keystores
+ACCOUNT=./keystores/keystore.json
+PASSFILE=./keystores/keystore-passfile.txt
+PORT=9000
+
+RELAYER_URI=http://localhost:9000/redeem
+BUCKET=
+
+ERC20_FACTORY=
+ERC20_TOKEN_ADDRESS=
+ERC20_BUCKET_VALIDITY=30
+ERC20_BUCKET_FILE=./erc20.csv

migrations/01_initial_migration.js

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+const Migrations = artifacts.require("Migrations");
+const NFTBucketFactory = artifacts.require("NFTBucketFactory");
+const ERC20BucketFactory = artifacts.require("ERC20BucketFactory");
+const TestToken = artifacts.require("TestToken");
+
+module.exports = function(deployer, network) {
+  deployer.deploy(Migrations);
+  deployer.deploy(NFTBucketFactory);
+  deployer.deploy(ERC20BucketFactory);
+
+  if (network === "development") {
+    deployer.deploy(TestToken, "TEST", 18);
+  }
+};

truffle-config.js

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+const path = require("path");
+
+/**
+ * Use this file to configure your truffle project. It's seeded with some
+ * common settings for different networks and features like migrations,
+ * compilation and testing. Uncomment the ones you need or modify
+ * them to suit your project as necessary.
+ *
+ * More information about configuration can be found at:
+ *
+ * truffleframework.com/docs/advanced/configuration
+ *
+ * To deploy via Infura you'll need a wallet provider (like @truffle/hdwallet-provider)
+ * to sign your transactions before they're sent to a remote public node. Infura accounts
+ * are available for free at: infura.io/register.
+ *
+ * You'll also need a mnemonic - the twelve word phrase the wallet uses to generate
+ * public/private key pairs. If you're publishing your code to GitHub make sure you load this
+ * phrase from a file you've .gitignored so it doesn't accidentally become public.
+ *
+ */
+
+// const HDWalletProvider = require('@truffle/hdwallet-provider');
+// const infuraKey = "fj4jll3k.....";
+//
+// const fs = require('fs');
+// const mnemonic = fs.readFileSync(".secret").toString().trim();
+
+module.exports = {
+  contracts_build_directory: path.join(__dirname, "client/src/contracts"),
+  /**
+   * Networks define how you connect to your ethereum client and let you set the
+   * defaults web3 uses to send transactions. If you don't specify one truffle
+   * will spin up a development blockchain for you on port 9545 when you
+   * run `develop` or `test`. You can ask a truffle command to use a specific
+   * network from the command line, e.g
+   *
+   * $ truffle test --network <network-name>
+   */
+
+  networks: {
+    // Useful for testing. The `development` name is special - truffle uses it by default
+    // if it's defined here and no other network is specified at the command line.
+    // You should run a client (like ganache-cli, geth or parity) in a separate terminal
+    // tab if you use this network and you must also set the `host`, `port` and `network_id`
+    // options below to some value.
+    //
+    development: {
+     host: "127.0.0.1",     // Localhost (default: none)
+     port: 7545,            // Standard Ethereum port (default: none)
+     network_id: "*",       // Any network (default: none)
+    },
+
+    // Another network with more advanced options...
+    // advanced: {
+      // port: 8777,             // Custom port
+      // network_id: 1342,       // Custom network
+      // gas: 8500000,           // Gas sent with each transaction (default: ~6700000)
+      // gasPrice: 20000000000,  // 20 gwei (in wei) (default: 100 gwei)
+      // from: <address>,        // Account to send txs from (default: accounts[0])
+      // websockets: true        // Enable EventEmitter interface for web3 (default: false)
+    // },
+
+    // Useful for deploying to a public network.
+    // NB: It's important to wrap the provider as a function.
+    // ropsten: {
+      // provider: () => new HDWalletProvider(mnemonic, `https://ropsten.infura.io/v3/YOUR-PROJECT-ID`),
+      // network_id: 3,       // Ropsten's id
+      // gas: 5500000,        // Ropsten has a lower block limit than mainnet
+      // confirmations: 2,    // # of confs to wait between deployments. (default: 0)
+      // timeoutBlocks: 200,  // # of blocks before a deployment times out  (minimum/default: 50)
+      // skipDryRun: true     // Skip dry run before migrations? (default: false for public nets )
+    // },
+
+    // Useful for private networks
+    // private: {
+      // provider: () => new HDWalletProvider(mnemonic, `https://network.io`),
+      // network_id: 2111,   // This network is yours, in the cloud.
+      // production: true    // Treats this network as if it was a public net. (default: false)
+    // }
+  },
+
+  // Set default mocha options here, use special reporters etc.
+  mocha: {
+    // timeout: 100000
+  },
+
+  // Configure your compilers
+  compilers: {
+    solc: {
+      version: "0.5.16",    // Fetch exact version from solc-bin (default: truffle's version)
+      // docker: true,        // Use "0.5.1" you've installed locally with docker (default: false)
+      // settings: {          // See the solidity docs for advice about optimization and evmVersion
+      //  optimizer: {
+      //    enabled: false,
+      //    runs: 200
+      //  },
+      //  evmVersion: "byzantium"
+      // }
+    }
+  }
+}