I finally pieced together the PowerShell to pull my reputations from Warcraft using PowerShell.
After many weeks of searching various sites and documentation from Blizzard, I finally have a finished product. Feel free to share. Here are also some links of note.
You will first need to go to the main Battle.net developers page and create an application using your account credentials. This will give you a ClientSecret and ClientID used in the OAuth method of accessing the APIs.