Truffle Project Setup
If you've already installed the CLI, then you are already good to go, as the synchronization is done by it as well!
You just need to make sure that you are either calling the listen command from your Truffle project directory. Or that you pass the -d parameter.
When starting the CLI, contracts will be synchronized, so the output should look like the following:
The CLI watches any changes in the artifacts. So if you manually edit a field that is synchronized, it might make the decoding impossible!