Merge pull request #28 from aiuto/linty

Do some things to make buildifier happy
diff --git a/rules/license.bzl b/rules/license.bzl
index 1a90b09..86e0307 100644
--- a/rules/license.bzl
+++ b/rules/license.bzl
@@ -84,8 +84,8 @@
                      may be used to produce an index of OSS packages used by
                      an applicatation.
     """
-    license_text_arg = kwargs.get("license_text") or "LICENSE"
-    single_kind = kwargs.get("license_kind")
+    license_text_arg = kwargs.pop("license_text", default = None) or "LICENSE"
+    single_kind = kwargs.pop("license_kind", default = None)
     if single_kind:
         if license_kinds:
             fail("Can not use both license_kind and license_kinds")
@@ -99,4 +99,5 @@
         package_name = package_name,
         applicable_licenses = [],
         tags = tags,
+        visibility = ["//visibility:public"],
     )