Adding UPGRADING notes.
http://codereview.appspot.com/1276042/show
- Refactor ImageRewriter as HttpResponseRewriter (issue127604... johnfargo
- Re: Refactor ImageRewriter as HttpResponseRewriter (is... lindner
- Re: Refactor ImageRewriter as HttpResponseRewriter (is... johnfargo
- Re: Refactor ImageRewriter as HttpResponseRewriter (is... zhoresh
- Re: Refactor ImageRewriter as HttpResponseRewriter... John Hjelmstad
- Re: Refactor ImageRewriter as HttpResponseRewriter (is... John Hjelmstad
