Initial hood implementation.

- Zeroing works, control loop converges.

Change-Id: Icf28f17f7623dbe565379ae14c56e699c2631a8e
diff --git a/y2017/control_loops/superstructure/BUILD b/y2017/control_loops/superstructure/BUILD
index d0603ba..de419c8 100644
--- a/y2017/control_loops/superstructure/BUILD
+++ b/y2017/control_loops/superstructure/BUILD
@@ -13,3 +13,19 @@
     '//frc971/control_loops:queues',
   ],
 )
+
+cc_library(
+  name = 'superstructure_lib',
+  srcs = [
+    'superstructure.cc',
+  ],
+  hdrs = [
+    'superstructure.h',
+  ],
+  deps = [
+    ':superstructure_queue',
+    '//aos/common/controls:control_loop',
+    '//y2017/control_loops/superstructure/hood',
+    '//y2017:constants',
+  ],
+)