Fixed createRandom when no options are passed in.

wallet/index.js

@@ -8,7 +8,7 @@ module.exports = {
     HDNode: HDNode,
     Wallet: Wallet,
 
-    // Do we need to expose this at all?
+    SigningKey: SigningKey,
     _SigningKey: SigningKey,
 }
 

wallet/package.json

@@ -1,6 +1,6 @@
 {
   "name": "ethers-wallet",
-  "version": "2.0.0",
+  "version": "2.0.1",
   "description": "Wallet and signing library for Ethereum.",
   "bugs": {
     "url": "http://github.com/ethers-io/ethers.js/issues",

wallet/wallet.js

@@ -311,6 +311,9 @@ utils.defineProperty(Wallet, 'isEncryptedWallet', function(json) {
 
 utils.defineProperty(Wallet, 'createRandom', function(options) {
     var entropy = utils.randomBytes(16);
+
+    if (!options) { options = { }; }
+
     if (options.extraEntropy) {
         entropy = utils.keccak256(utils.concat([entropy, options.extraEntropy])).substring(0, 34);
     }
@@ -393,7 +396,6 @@ utils.defineProperty(Wallet, 'fromBrainWallet', function(username, password, pro
     });
 });
 
-
 //utils.defineProperty(Wallet, 'isCrowdsaleWallet', secretStorage.isCrowdsaleWallet);
 
 //utils.defineProperty(Wallet, 'decryptCrowdsale', function(json, password) {