def authorize_on_trello(auth_params={})
%w{developer_public_key access_token_key}.each do |key|
auth_params[key.to_sym] ||= ENV[key] || authorization_params_from_config_file[key]
end
Trello.configure do |config|
config.developer_public_key = auth_params[:developer_public_key]
config.member_token = auth_params[:access_token_key]
end
end