First TwoPlayerTrueSkillCalculator unit test passed

PHPSkills/Elo/KFactor.php

@@ -0,0 +1,22 @@
+<?php
+
+namespace Moserware\Skills\Elo;
+
+class KFactor
+{
+    const DEFAULT_KFACTOR = 24;
+    
+    private $_value;
+
+    public function __construct($exactKFactor = self::DEFAULT_KFACTOR)
+    {
+        $this->_value = $exactKFactor;
+    }
+
+    public function getValueForRating($rating)
+    {
+        return $this->_value;
+    }
+}
+
+?>