Let's say alice is a github.com user, with 2 or more private repositories repoN.
For this example we'll work with just two repositories named repo1 and repo2
https://github.com/alice/repo1
https://github.com/alice/repo2
You need to be to pull from these repositories without entering a passwords probably on a server, or on multiple servers.
You want to perform git pull origin master for example, and you want this to happen without asking for a password.
