update hdwallet and add Migrations.sol

Author: DJViau

contracts/Migrations.sol

@@ -0,0 +1,23 @@
+pragma solidity >=0.4.21 <0.6.0;
+
+contract Migrations {
+  address public owner;
+  uint public last_completed_migration;
+
+  constructor() public {
+    owner = msg.sender;
+  }
+
+  modifier restricted() {
+    if (msg.sender == owner) _;
+  }
+
+  function setCompleted(uint completed) public restricted {
+    last_completed_migration = completed;
+  }
+
+  function upgrade(address new_address) public restricted {
+    Migrations upgraded = Migrations(new_address);
+    upgraded.setCompleted(last_completed_migration);
+  }
+}

migrations/1_initial_migrations.js

@@ -1,5 +1,5 @@
-const Migrations = artifacts.require("../node_modules/zeppelin-solidity/contracts/lifecycle/Migrations.sol");
+var Migrations = artifacts.require("./Migrations.sol");
 
 module.exports = function(deployer) {
   deployer.deploy(Migrations);
-};
+};

package-lock.json

@@ -21,7 +21,7 @@
     "opensea-js": "latest",
     "openzeppelin-solidity": "^2.1.3",
     "truffle": "^5.0.7",
-    "truffle-hdwallet-provider": "0.0.7-beta.0",
+    "truffle-hdwallet-provider": "1.0.5",
     "web3": "^1.0.0-beta.34"
   },
   "engines": {