[css-shapes-2] add Rossen as editor

Author: astearns

css-shapes-2/Overview.bs

@@ -7,6 +7,7 @@ Level: 2
 Group: csswg
 TR: http://www.w3.org/TR/css-shapes-2/
 ED: http://dev.w3.org/csswg/css-shapes-2/
+Editor: Rossen Atanassov, Microsoft Corporation, ratan@microsoft.com
 Editor: Alan Stearns, Adobe Systems, Inc., stearns@adobe.com
 !Issues list: <a href="https://www.w3.org/Bugs/Public/buglist.cgi?query_format=advanced&amp;product=CSS&amp;component=Shapes&amp;resolution=---&amp;cmdtype=doit">In Bugzilla</a>
 Abstract: This draft contains the features of CSS relating to wrapping content around and inside shapes. It (implicitly for now) includes and extends the functionality of CSS Shapes Level 1 [[CSS-SHAPES]]. The main points of extension compared to level 1 include additional ways of defining shapes, defining an exclusion area using a shape, and restricting an element's content area using a shape.