Using statAt

Including usage to startAt for startFollow method

Author: diteix

src/gameobjects/pathfollower/PathFollower.js

@@ -23,6 +23,7 @@ var Vector2 = require('../../math/Vector2');
  * @property {boolean} [positionOnPath=false] - Whether to position the PathFollower on the Path using its path offset.
  * @property {boolean} [rotateToPath=false] - Should the PathFollower automatically rotate to point in the direction of the Path?
  * @property {number} [rotationOffset=0] - If the PathFollower is rotating to match the Path, this value is added to the rotation value. This allows you to rotate objects to a path but control the angle of the rotation as well.
+ * @property {number} [startAt=0] - Current start position of the path follow, between 0 and 1.
  */
 
 /**
@@ -245,6 +246,7 @@ var PathFollower = new Class({
         //  Override in case they've been specified in the config
         config.from = 0;
         config.to = 1;
+        config.startAt = startAt;
 
         //  Can also read extra values out of the config: