Metacello, Github and Cryptography

Hi Guys, I'm looking for a guide on how to load a project from github but I can't find anything. Specifically I want to load the Cryptography package. Udo, told me it is on https://github.com/pharo-contributions/Cryptography, so I went to https://github.com/pharo-contributions/Cryptography but there is no documentation on how to load it. Then after some attempts, I evaluated this code: Metacello new baseline: 'Cryptography'; repository: 'github://pharo-contributions/Cryptography'; load. and it works, but I can't figure out where is the usage of Metacello with Github Thanks Francis -- Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html