Yes! I took a minute to add it to the description, thank you :)
Why 2.0 not 4.0? As I know CC licenses has mechanism that says that license is compatible with later versions. Consider to start using CC BY 4.0
If you decide to do it, you should add the license into metadata for the asset pack(s):
"Edit asset pack->Metadata->Release Info->License for assets" It will increase the size of audience that will be able to find your art