Added more clear comments to superstructure

Change-Id: I651accdde59e365fa9a7477fc0c4f6d223f22c14
diff --git a/y2016/control_loops/superstructure/superstructure.q b/y2016/control_loops/superstructure/superstructure.q
index 1ca1ca4..63fdcf0 100644
--- a/y2016/control_loops/superstructure/superstructure.q
+++ b/y2016/control_loops/superstructure/superstructure.q
@@ -32,7 +32,8 @@
     // Zero on the shoulder is horizontal.  Positive is up.  The angle is
     // measured relative to the top of the robot frame.
     // Zero on the wrist is horizontal and landed in the bellypan.  Positive is
-    // up.  The angle is measured relative to the top of the robot frame.
+    // the same direction as the shoulder.  The angle is measured relative to
+    // the top of the robot frame.
 
     // Goal angles and angular velocities of the superstructure subsystems.
     double angle_intake;