Binary file spec/img/WebIDSequence-friendly.graffle has changed

Binary file spec/img/WebIDSequence-friendly.png has changed

--- a/spec/tls-respec.html	Mon Jul 01 14:05:22 2013 +0200
+++ b/spec/tls-respec.html	Mon Jul 01 14:12:45 2013 +0200
@@ -711,7 +711,7 @@
  Once the verification succeeds the Guard checks to see if the Agent identified by the <tref>WebID</tref> is allowed access to the resource, by using trusted information from the Web and access control rules. 
 </p>
 
-<img width="90%" src="img/WebIDSequence-friendly.jpg">
+<img width="90%" src="img/WebIDSequence-friendly.png">
 <p>The steps in detail are as follows:</p>
 <ol>
     <li><tref>Bob</tref>'s <tref>Client</tref> MUST open a TLS [[!TLS]] connection with the server which authenticates itself using well known TLS mechanisms.