Plot estimated velocity for drivetrain.

Change-Id: I261093dae51825fe429e0794c64a9fe61a917c07
diff --git a/frc971/analysis/drivetrain_plot_stripped b/frc971/analysis/drivetrain_plot_stripped
index 26844e0..d42952e 100644
--- a/frc971/analysis/drivetrain_plot_stripped
+++ b/frc971/analysis/drivetrain_plot_stripped
@@ -8,6 +8,8 @@
 
 drivetrain.stripped status estimated_left_position
 drivetrain.stripped status estimated_right_position
+drivetrain.stripped status estimated_left_velocity
+drivetrain.stripped status estimated_right_velocity
 
 drivetrain.stripped goal left_goal
 drivetrain.stripped goal right_goal