Renamed ZeroingEstimator to PotAndIndexPulseZeroingEstimator

Renamed to allow for creating a new interface named ZeroingEstimator
in the future.

Change-Id: I374808cdc39dd4141ea67c81de69bbac98326648
diff --git a/y2016_bot3/control_loops/intake/intake.cc b/y2016_bot3/control_loops/intake/intake.cc
index b50ccca..6fee1d2 100644
--- a/y2016_bot3/control_loops/intake/intake.cc
+++ b/y2016_bot3/control_loops/intake/intake.cc
@@ -11,7 +11,8 @@
 namespace y2016_bot3 {
 namespace constants {
 constexpr double IntakeZero::pot_offset;
-constexpr ::frc971::constants::ZeroingConstants IntakeZero::zeroing;
+constexpr ::frc971::constants::PotAndIndexPulseZeroingConstants
+    IntakeZero::zeroing;
 }  // namespace constants
 
 namespace control_loops {