Update policy.md

Adding deadline to comment period.

Author: Bill Hunt

README.md

@@ -12,6 +12,8 @@ OMB has posted [a draft memorandum](https://datacenters.cio.gov/policy/) for pub
 
 3. Send your content suggestions or proposed revisions to the OMB Office of the Federal Chief Information Officer via email to [ofcio@omb.eop.gov](mailto:ofcio@omb.eop.gov). Please note that all comments received will be posted publicly on this page.
 
+Comments must be received on or before December 26, 2018.
+
 ## Public domain
 
 This project is in the worldwide [public domain](LICENSE.md). As stated in [CONTRIBUTING](CONTRIBUTING.md):

pages/policy.md

@@ -20,6 +20,9 @@ sidenav: policy
   <p>
     3. Send your content suggestions or proposed revisions to the OMB Office of the Federal Chief Information Officer via email to <a href="mailto:{{site.mail}}">{{site.mail}}</a>. Please note that all comments received will be posted publicly.
   </p>
+  <p>
+    Comments must be received on or before December 26, 2018.
+  </p>
 </header>
 {% endif %}