Begin y2017 folder.

Change-Id: I527f49ae6b5e070fe138acd7dc7e5fff19d2b2e3
diff --git a/y2017/BUILD b/y2017/BUILD
new file mode 100644
index 0000000..aa423a8
--- /dev/null
+++ b/y2017/BUILD
@@ -0,0 +1,17 @@
+cc_library(
+  name = 'constants',
+  visibility = ['//visibility:public'],
+  srcs = [
+    'constants.cc',
+  ],
+  hdrs = [
+    'constants.h',
+  ],
+  deps = [
+    '//aos/common/logging',
+    '//aos/common:once',
+    '//aos/common/network:team_number',
+    '//aos/common:mutex',
+    '//frc971:constants',
+  ],
+)