Adjusting camera position. Cubes are too far (#1795)

Author: dmarcos

examples/showcase/tracked-controls/index.html

@@ -26,7 +26,7 @@
       <a-entity hand-controls="right" aabb-collider="objects: .cube;" grab></a-entity>
 
       <!-- A-Frame cubes -->
-      <a-entity position="0 0 -4">
+      <a-entity position="0 0 -1">
         <a-entity class="cube" mixin="cube" position="0.30 1.65 0"></a-entity>
         <a-entity class="cube" mixin="cube" position="0 1.95 0"></a-entity>
         <a-entity class="cube" mixin="cube" position="-0.30 1.65 0"></a-entity>