Drive code works on Tantrum.

Need to write the spring code.  Drive now supports doubles...  What a
pain.

Change-Id: Id589acdc443dcd81242a21e3b0c26f81d6974dc8
diff --git a/y2012/control_loops/drivetrain/drivetrain_base.h b/y2012/control_loops/drivetrain/drivetrain_base.h
index 3d85af1..f5675a8 100644
--- a/y2012/control_loops/drivetrain/drivetrain_base.h
+++ b/y2012/control_loops/drivetrain/drivetrain_base.h
@@ -7,8 +7,8 @@
 namespace control_loops {
 namespace drivetrain {
 
-const ::frc971::control_loops::drivetrain::DrivetrainConfig &
-GetDrivetrainConfig();
+const ::frc971::control_loops::drivetrain::DrivetrainConfig<double>
+    &GetDrivetrainConfig();
 
 }  // namespace drivetrain
 }  // namespace control_loops