Made pistol grip controller work with the drivetrain.

Change-Id: Id5ede34e9a9981c338aaa6118eb5085578a8ecd3
diff --git a/y2014_bot3/autonomous/auto.cc b/y2014_bot3/autonomous/auto.cc
index 90d8457..6b63fab 100644
--- a/y2014_bot3/autonomous/auto.cc
+++ b/y2014_bot3/autonomous/auto.cc
@@ -36,7 +36,7 @@
   LOG(INFO, "resetting the drivetrain\n");
   ::frc971::control_loops::drivetrain_queue.goal.MakeWithBuilder()
       .control_loop_driving(false)
-      .steering(0.0)
+      .wheel(0.0)
       .throttle(0.0)
       .left_goal(left_initial_position)
       .left_velocity_goal(0)
@@ -68,7 +68,7 @@
       .control_loop_driving(false)
       .highgear(false)
       .quickturn(false)
-      .steering(0.0)
+      .wheel(0.0)
       .throttle(0.5)
       .left_goal(left_initial_position)
       .left_velocity_goal(0)
@@ -81,7 +81,7 @@
       .control_loop_driving(false)
       .highgear(false)
       .quickturn(false)
-      .steering(0.0)
+      .wheel(0.0)
       .throttle(0.0)
       .left_goal(left_initial_position)
       .left_velocity_goal(0)
diff --git a/y2014_bot3/joystick_reader.cc b/y2014_bot3/joystick_reader.cc
index a29856b..b4126d1 100644
--- a/y2014_bot3/joystick_reader.cc
+++ b/y2014_bot3/joystick_reader.cc
@@ -81,7 +81,7 @@
     }
 
     if (!drivetrain_queue.goal.MakeWithBuilder()
-             .steering(wheel)
+             .wheel(wheel)
              .throttle(throttle)
              .highgear(is_high_gear_)
              .quickturn(data.IsPressed(kQuickTurn))