[polymer] Merge of master into polymer10-migration

docs/adding-committers.md

Index: docs/adding-committers.md
diff --git a/docs/adding-committers.md b/docs/adding-committers.md
index 6e87ff48710a5e5c32d27b79cb4eb3165e2d3d45..ebd03fb9daadb72859727035e26a92a784a6d60d 100644
--- a/docs/adding-committers.md
+++ b/docs/adding-committers.md
@@ -1,11 +1,16 @@
 # Adding contributors
 
-Admins (nduca, sullivan) can add contributors to the project. There are two
+Admins (nduca, sullivan) can add contributors to the project. There are three
 steps:
 
-1.  Add the person's github account to the [catapult]
-(https://github.com/orgs/catapult-project/teams/catapult) team.
-2.  Add the person's email to the [commit queue list]
+1.  Check that the person has signed the Contributor License Agreement.
+    You can check [here](http://go/check-cla). If they have not signed, please
+    redirect them to [this page]
+    (https://cla.developers.google.com/about/google-individual?csw=1) and wait
+    for them to sign before adding.
+2.  Add the person's github account to the [catapult]
+    (https://github.com/orgs/catapult-project/teams/catapult) team.
+3.  Add the person's email to the [commit queue list]
 (https://chrome-infra-auth.appspot.com/auth/groups#project-catapult-committers).
 
 Because there is no API to retrieve a person's GitHub ID from their email