Move all the motors stuff into a saner namespace

Letting the mechanical engineers name software is never a good idea...

Change-Id: I5d0e43d84a8f45693435472cc0e5e288f6190b14
diff --git a/motors/algorithms.h b/motors/algorithms.h
index 8b397f8..63d6d19 100644
--- a/motors/algorithms.h
+++ b/motors/algorithms.h
@@ -4,7 +4,7 @@
 #include <stdint.h>
 
 namespace frc971 {
-namespace salsa {
+namespace motors {
 
 struct ReadingsToBalance {
   // Adds a single reading at index.
@@ -39,7 +39,7 @@
   return r;
 }
 
-}  // namespace salsa
+}  // namespace motors
 }  // namespace frc971
 
 #endif  // MOTORS_ALGORITHMS_H_