We'll begin by configuring mix.exs, first with the list of running applications. This is the same as what we had to do to get Ueberauth and Ueberauth's Twitter strategy installed:
extra_applications: [:logger, :runtime_tools, :ueberauth, :ueberauth_twitter, :ueberauth_google]
Of course, we'll also have to add it to our list of dependencies under the deps function:
{:ueberauth_google, "~> 0.7"}
Now, we'll modify our config/config.exs file to include a new provider for Ueberauth. The providers key is just a list of the different providers and which strategy they use to log someone in, so we'll add Google to our list:
config :ueberauth, Ueberauth, providers: [ twitter: {Ueberauth.Strategy.Twitter, []}, google: ...
