Add BUILD file Change-Id: Ie37b4fdca4ae9dea997d61bc1001aad0bb4c3e23

diff --git a/BUILD b/BUILD
new file mode 100644
index 0000000..f84f778
--- /dev/null
+++ b/BUILD

@@ -0,0 +1,8 @@
+load("//tools/bzl:js.bzl", "polygerrit_plugin")
+
+polygerrit_plugin(
+    name = "image-diff",
+    srcs = glob(["**/*.html", "**/*.js"]),
+    app = "plugin.html",
+    deps = ["//lib/js:resemblejs"],
+)
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