Add message to stack

lib/errors/build.js

@@ -14,7 +14,7 @@ var formatMessage = function(message) {
 var defineElement = function(fullName, baseClass, message) {
   return fullName + ' = function() {\n' +
          '  this.message = ' + formatMessage(message) + ';\n' +
-         '  this.stack = (new Error()).stack;\n' +
+         '  this.stack = this.message + \'\\n\' + (new Error()).stack;\n' +
          '};\n' +
          fullName + '.prototype = Object.create(' + baseClass + '.prototype);\n' +
          fullName + '.prototype.name = "' + fullName + '";\n\n';

lib/errors/spec.js

@@ -4,7 +4,7 @@ module.exports = [{
   errors: [
     {
       name: 'InvalidArgument',
-      message: 'HDPrivateKey: Invalid Argument {0}, expected {1} but got {2}',
+      message: 'Invalid Argument {0}, expected {1} but got {2}',
       errors: [{
         name: 'InvalidB58Char',
         message: 'Invalid Base58 character: {0} in {1}'
@@ -48,7 +48,7 @@ module.exports = [{
   errors: [
     {
       name: 'InvalidArgument',
-      message: 'HDPublicKey: Invalid Argument {0}, expected {1} but got {2}',
+      message: 'Invalid Argument {0}, expected {1} but got {2}',
       errors: [{
         name: 'ArgumentIsPrivateExtended',
         message: 'Argument is an extended private key: {0}'