`end-of-tuesday.tar.gz` contains the state of our code at the end of Tuesday.

It alrady has:
 -  the detector (geometry): `YourDetectorConstruction` 
 -  the physics list: using the "FTFP_BERT" refrence physics list

The next steps are to provide the remaining mandatory component:
 - the primary generator through the action initialisation 
Then the different execution possibilities can be investigated 
together with visualisation.

Download it on your virtual machine (will be downloaded into the `Downloads`
directory), copy to you local work directory and extract there with the 

 tar -xzvf end-of-tuesday.tar.gz

This will be our starting point on Wednesday.