add created, updated field to db && improve graph design

src/Mine/SeekerBundle/Entity/PlayedGame.php

@@ -105,6 +105,20 @@ class PlayedGame
      */
     private $resign;
 
+    /**
+     * @var \DateTime
+     *
+     * @ORM\Column(name="created", type="datetime", nullable=true)
+     */
+    private $created;
+
+    /**
+     * @var \DateTime
+     *
+     * @ORM\Column(name="updated", type="datetime", nullable=true)
+     */
+    private $updated;
+
     /**
      * @var Step
      *
@@ -429,4 +443,52 @@ class PlayedGame
     {
         return $this->resign;
     }
+
+    /**
+     * Set created
+     *
+     * @param \DateTime $created
+     *
+     * @return PlayedGame
+     */
+    public function setCreated($created)
+    {
+        $this->created = $created;
+
+        return $this;
+    }
+
+    /**
+     * Get created
+     *
+     * @return \DateTime
+     */
+    public function getCreated()
+    {
+        return $this->created;
+    }
+
+    /**
+     * Set updated
+     *
+     * @param \DateTime $updated
+     *
+     * @return PlayedGame
+     */
+    public function setUpdated($updated)
+    {
+        $this->updated = $updated;
+
+        return $this;
+    }
+
+    /**
+     * Get updated
+     *
+     * @return \DateTime
+     */
+    public function getUpdated()
+    {
+        return $this->updated;
+    }
 }