Moved 2014 drivetrain code into y2014 namespace.

Change-Id: I74a1922f846a288725df2aea01c5c9e1b99e07b3
diff --git a/y2014/constants.h b/y2014/constants.h
index 79ba826..1081a57 100644
--- a/y2014/constants.h
+++ b/y2014/constants.h
@@ -6,9 +6,11 @@
 #include "frc971/control_loops/state_feedback_loop.h"
 #include "frc971/shifter_hall_effect.h"
 
-namespace frc971 {
+namespace y2014 {
 namespace constants {
 
+using ::frc971::constants::ShifterHallEffect;
+
 // Has all of the numbers that change for both robots and makes it easy to
 // retrieve the values for the current one.
 
@@ -140,6 +142,6 @@
 const Values &GetValuesForTeam(uint16_t team_number);
 
 }  // namespace constants
-}  // namespace frc971
+}  // namespace y2014
 
 #endif  // Y2014_CONSTANTS_H_