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.cc b/y2012/control_loops/drivetrain/drivetrain_base.cc
index 1e0cfad..b94c4f0 100644
--- a/y2012/control_loops/drivetrain/drivetrain_base.cc
+++ b/y2012/control_loops/drivetrain/drivetrain_base.cc
@@ -17,8 +17,8 @@
 
 const ShifterHallEffect kThreeStateDriveShifter{0.0, 0.0, 0.25, 0.75};
 
-const DrivetrainConfig &GetDrivetrainConfig() {
-  static DrivetrainConfig kDrivetrainConfig{
+const DrivetrainConfig<double> &GetDrivetrainConfig() {
+  static DrivetrainConfig<double> kDrivetrainConfig{
       ::frc971::control_loops::drivetrain::ShifterType::NO_SHIFTER,
       ::frc971::control_loops::drivetrain::LoopType::CLOSED_LOOP,
       ::frc971::control_loops::drivetrain::GyroType::SPARTAN_GYRO,
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