Add policy around automated tools claiming names

Author: sgrif

app/templates/policies.hbs

@@ -25,6 +25,12 @@ them. If necessary, the team may reach out to inactive maintainers and help
 mediate the process of ownership transfer.
 </p>
 
+<p>
+Using an automated tool to claim ownership of a large number of package names
+is not permitted. We reserve the right to block traffic or revoke ownership
+of any package we determine to have been claimed by an automated tool.
+</p>
+
 <h2 id='removal'><a href='#removal'>Removal</a></h2>
 
 <p>