Add script to print current DAO address

scripts/current-address.js

@@ -0,0 +1,22 @@
+const knownAddresses = require('../lib/addresses/dao.json');
+
+module.exports = function(callback) {
+
+  console.log('# All known addresses');
+  Object.keys(knownAddresses).forEach((networkId) => {
+    console.log(`  Network ID: ${networkId} => ${knownAddresses[networkId]}`);
+  })
+
+  const networkId = web3.version.network;
+  console.log(`# Current network ID: ${networkId}`);
+
+  let currentAddress = knownAddresses[networkId];
+
+  if (currentAddress) {
+    console.log(`# Current address: ${currentAddress}`);
+  } else {
+    console.log(`No deployment found for network ID ${networkId}`);
+  }
+
+  callback();
+};