I've added 4 new fields under /Sitecore/Templates.
Just to confirm, are my following assumptions correct? I feel I'm closing in from experiments alone, but among so many things to know and read about, I won't mind some external light.
in Visual Studio 2013, until you do a TDS "Sync with Sitecore" there is no awareness of these new fields.
You normally never have to manually edit GlassData.cs . After a TDS "Sync with Sitecore", the 4 new fields would be added automatically there, on the next Visual Studio BUILD. (At first, I manually added my 4 fields there.. until I could Build quietly)
GIT / bitbucket : you normally never include GlassData.cs in a commit. In effect you never "Push" GlassData.cs? But then what would be the auto-refresh mechanism on a shared DEV Sitecore instance (no Visual studio there) ?