Copy back a lot of the 2014 code.

Change-Id: I552292d8bd7bce4409e02d254bef06a9cc009568
diff --git a/y2014/control_loops/update_arm.sh b/y2014/control_loops/update_arm.sh
new file mode 100755
index 0000000..c4c1ab9
--- /dev/null
+++ b/y2014/control_loops/update_arm.sh
@@ -0,0 +1,10 @@
+#!/bin/bash
+#
+# Updates the arm controllers (for both robots).
+
+cd $(dirname $0)
+
+./python/arm.py fridge/arm_motor_plant.cc \
+    fridge/arm_motor_plant.h \
+    fridge/integral_arm_plant.cc \
+    fridge/integral_arm_plant.h