Just a little productivity tip. If you use git on Windows, you probably already have the Github for Windows application. This application adds the Git Shell:

The Git Shell will open a PowerShell window and execute shell.ps1 from the Github directory:

What it won’t do is to load your personal PowerShell profile. I want to use my PowerShell profile that creates some links and adjust the look-and-feel and the promt of the shell. By the way I have published my profile.ps1 as a gist: