The nimble package eg. c2nim location in Linux

[DavideGalilei]

Assuming that you already installed it with `nimble install c2nim`, it should 
be located in the ~/.nimble/bin/ folder. If it is not there, but you can still 
manage to run it, use the which command to find its location: `which c2nim` (or 
if you are on windows, use `where` instead)