phonetic keys can begin with vowel + added missing \'z\' to consontants

lib/key_generators/phonetic.js

@@ -6,13 +6,14 @@ var PhoneticKeyGenerator = function(options) {
 // Generate a phonetic key
 PhoneticKeyGenerator.prototype.createKey = function(keyLength) {
   var text = '';
+  var start = Math.round(Math.random() * 2);
   for (var i = 0; i < keyLength; i++) {
-    text += (i % 2 == 0) ? this.randConsonant() : this.randVowel();
+    text += (i % 2 == start) ? this.randConsonant() : this.randVowel();
   }
   return text;
 };
 
-PhoneticKeyGenerator.consonants = 'bcdfghjklmnpqrstvwxy';
+PhoneticKeyGenerator.consonants = 'bcdfghjklmnpqrstvwxyz';
 PhoneticKeyGenerator.vowels = 'aeiou';
 
 // Get an random vowel