Changed activepodio to not initialize nested association hash if all the values are blank, as the API will balk at an empty nested hash being present
Changed activepodio to not initialize nested association hash if all the values are blank, as the API will balk at an empty nested hash being present

podio/podio-rb,jutonz/podio-rb,pjmuller/podio-rb,cocktail-io/podio-rb