You do not need to check in the folders cause it is generated by visual studio or the editor:
- DerivedDataCache
- Intermediate
- Saved
And you should also ignore files with the ending .pdb which contain the debug data base. You may checkin the other binary files (or only the DLLs) or decide that your artist has to run his own copy of visual studio to generate those binary files. Well currently I prefer to check-in the DLLs but maybe I will switch this behavior when binaries become to big.
So well thats only my personal experience so far and I just started friday