Add README.chromium.

So that we can add pyelftools (along with chromite) to the Chromium
checkout.

BUG=None
TEST=None

Change-Id: Icf7f161ec674bfb3a4fe964f3483794e7430797c
Reviewed-on: https://gerrit.chromium.org/gerrit/45945
Reviewed-by: Mike Frysinger <vapier@chromium.org>
Commit-Queue: Ryan Cui <rcui@chromium.org>
Tested-by: Ryan Cui <rcui@chromium.org>
diff --git a/README.chromium b/README.chromium
new file mode 100644
index 0000000..29489fa
--- /dev/null
+++ b/README.chromium
@@ -0,0 +1,11 @@
+Name: pyelftools
+Short Name: pyelftools
+URL: https://bitbucket.org/eliben/pyelftools
+Version: 0
+Revision: d23cf2f5bd2a3c3d6f516f0f2d01817ea83236fc
+License: Public Domain
+License File: LICENSE
+Security Critical: no
+
+Description:
+This contains Chromium OS's patched version of Eli Bendersky's pyelftools.