Adds file group with gradle distribution

Change-Id: I9dc2c34927ef8e82b6fd9ab6f9062be9419bf287
diff --git a/BUILD b/BUILD
new file mode 100644
index 0000000..0f17c81
--- /dev/null
+++ b/BUILD
@@ -0,0 +1,5 @@
+filegroup(
+    name = "gradle",
+    srcs = ["gradle-2.14.1-bin.zip"],
+    visibility = ["//visibility:public"],
+)