editing login with ajax plugin to include registration

Has anyone attempted this? I’m trying to get Login with AJAX to include handling the registration as well. i see this in the php file

// Reads ajax login creds via POSt, calls the login script and interprets the result
	function login(){
		$return = array(); //What we send back
		$loginResult = wp_signon();
		$user_role = 'null';
		if ( get_class($loginResult) == 'WP_User' ) {
			//User login successful
			/* @var $loginResult WP_User */
			$return['result'] = true;
			//Do a redirect if necessary
			$data = get_option('lwa_data');
			$user_role = array_shift($loginResult->roles); //Checking for role-based redirects
			if( isset($data["role_login"][$user_role]) ){
				$return['redirect'] = $data["role_login"][$user_role];
			}else if($data['login_redirect'] != ''){
				$return['redirect'] = $data['login_redirect'];
			}
		} elseif ( get_class($loginResult) == 'WP_Error' ) {
			//User login failed
			/* @var $loginResult WP_Error */
			$return['result'] = false;
			$return['error'] = $loginResult->get_error_message();
		} else {
			//Undefined Error
			$return['result'] = false;
			$return['error'] = 'An undefined error has ocurred';
		}
		//Return the result array with errors etc.
		return $return;
	}

Now I’m assuming i can create a new function called ‘register’ and pretty much use code as a starter. My first stumbling block is trying to figure out how to get it to determine if the registration was successful or not. At first, I assumed i would change $loginResult = wp_signon(); to $loginResult = wp_register(); but i’m not sure if that returns anything on a successful registration, and if it does what does it return? not finding much info in the codex on this topic, so i’m hoping someone can help me out!