By default, put your certificate file (p12) and the Apple certificate Worldwide Developer Relations Certification Authority (pem) in the ./certificates directory. Their name by default is respectively: pass-certificate-key.p12 and AWDRCA.pem
The directory ./sources by default should contain the logo, icon, strip and so on.
To generate the pass.json file, a template should be located in ./template/pass.json by default, the program will replace the tokens from this file.