Added support for phonetic key naming

Closes #7

lib/key_generators/phonetic.js

@@ -0,0 +1,32 @@
+// Draws inspiration from pwgen and http://tools.arantius.com/password
+var PhoneticKeyGenerator = function(options) {
+  // No options
+};
+
+// Generate a phonetic key
+PhoneticKeyGenerator.prototype.createKey = function(keyLength) {
+  var text = '';
+  for (var i = 0; i < keyLength; i++) {
+    text += (i % 2 == 0) ? this.randConsonant() : this.randVowel();
+  }
+  return text;
+};
+
+PhoneticKeyGenerator.consonants = 'bcdfghjklmnpqrstvwxy';
+PhoneticKeyGenerator.vowels = 'aeiou';
+
+// Get an random vowel
+PhoneticKeyGenerator.prototype.randVowel = function() {
+  return PhoneticKeyGenerator.vowels[
+    Math.floor(Math.random() * PhoneticKeyGenerator.vowels.length)
+  ];
+};
+
+// Get an random consonant
+PhoneticKeyGenerator.prototype.randConsonant = function() {
+  return PhoneticKeyGenerator.consonants[
+    Math.floor(Math.random() * PhoneticKeyGenerator.consonants.length)
+  ];
+};
+
+module.exports = PhoneticKeyGenerator;

lib/key_generators/random.js

@@ -0,0 +1,14 @@
+var RandomKeyGenerator = function(options) {
+  this.keyspace = options.keyspace || 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
+};
+
+// Generate a random key
+RandomKeyGenerator.prototype.createKey = function(keyLength) {
+  var text = '';
+  for (var i = 0; i < keyLength; i++) {
+    text += this.keyspace.charAt(Math.floor(Math.random() * this.keyspace.length));
+  }
+  return text;
+};
+
+module.exports = RandomKeyGenerator;