Add temporary contact info for the mod team.

Eventually all the teams should have official addresses, but for now
the moderation team is using this private mailing list for email
communication.

Author: mbrubeck

team.md

@@ -86,6 +86,7 @@ teams:
   - name: Moderation
     responsibility: "helping uphold the [code of conduct](http://www.rust-lang.org/conduct.html)"
     members: [mbrubeck, BurntSushi, manishearth, pnkfelix, erickt]
+    email: [email protected]
 ---
 
 <style type="text/css">
@@ -136,6 +137,11 @@ rosters, in alphabetical order.
 
 **Responsibility**: *{{ team.responsibility }}*
 
+{% if team.email %}
+  **Contact**:
+  <a href="mailto:{{ team.email | uri_escape }}">{{ team.email }}</a>
+{% endif %}
+
 <ul class="headshots">
 {% for github in team.members %}
   {% assign person = page.people[github] %}