Change PrivateKey.toString from WIF to hex format

lib/privatekey.js

@@ -283,12 +283,21 @@ PrivateKey.isValid = function(data, network){
   return !PrivateKey.getValidationError(data, network);
 };
 
+/**
+ * Will output the PublicKey encoded as hex string
+ *
+ * @returns {String}
+ */
+PrivateKey.prototype.toString = function() {
+  return this.toBuffer().toString('hex');
+}
+
 /**
  * Will output the PrivateKey to a WIF string
  *
  * @returns {String} A WIP representation of the private key
  */
-PrivateKey.prototype.toString = PrivateKey.prototype.toWIF = function() {
+PrivateKey.prototype.toWIF = function() {
   var network = this.network;
   var compressed = this.compressed;
 

lib/publickey.js

@@ -409,8 +409,7 @@ PublicKey.prototype.toAddress = function(network) {
  * @returns {String} A DER hex encoded string
  */
 PublicKey.prototype.toString = function() {
-  var compressed = _.isUndefined(this.compressed) || this.compressed;
+  return this.toDER().toString('hex');
-  return this.toDER(compressed).toString('hex');
 };
 
 /**