2013-06-07: Document additional optional dependencies.

Document additional optional dependencies.

diff --git a/infocalypse/doc/infocalypse_howto.html b/infocalypse/doc/infocalypse_howto.html
--- a/infocalypse/doc/infocalypse_howto.html
+++ b/infocalypse/doc/infocalypse_howto.html
@@ -103,6 +103,19 @@ repository updates.
 "USK@0npnMrqZNKRCRoGojZV93UNHCMN-6UU3rRSAmP6jNLE,~BG-edFtdCC1cSH4O3BWdeIYa8Sw5DfyrSV-TKdO5ec,AQACAAE/fms/128/">USK@0npnMrqZNKRCRoGojZV93UNHCMN-6UU3rRSAmP6jNLE,~BG-edFtdCC1cSH4O3BWdeIYa8Sw5DfyrSV-TKdO5ec,AQACAAE/fms/128/
 </a>
 </pre></li>
+<li>lib-pyFreenet<br />
+Installing lib-pyFreenet is optional for many usages, but required to
+use WebOfTrust plugin integration.
+<p>The latest development of the library (as of this writing) is available
+<a href="https://github.com/ArneBab/lib-pyFreenet-staging/tree/review-bab">here [HTTP Link!]</a>.
+</p></li>
+<li>Web of Trust<br />
+Installing Web of Trust (or its counterpart,
+<a href="https://github.com/tmarkus/LessCrappyWebOfTrust">Less Crappy Web of Trust [HTTP Link!]</a>)
+is optional, but provides some helpful lookup features. TODO: Fill out when
+feature list is more concrete.<br />
+Web of Trust is an official plugin distributed with Freenet, and can be
+added on the Plugins page in the Configuration menu.</li>
 </ul>
 <p><a href="#toc">[TOC]</a></p>
 <hr />