Installation and upgrade notes
Notes on installation if Orchard is built from the source
If you want, you can include PGBT in the solution of your Orchard source. Since PGBT is a project itself, do this by adding it as an existing project to the Themes folder, but
do not add it to the existing Themes project!
Notes on upgrading from 1.1.x
Since PGBT became a C# project from a simple theme folder, if you added it to the Themes project as a folder before, you should exclude it after upgrading and add it as described above.