public function append_signature( $message, $signature = '' ) {

		if ( empty( $signature ) ) {
			return $message;
		}

		$separator = apply_filters( 'iac_signature_separator', str_repeat( PHP_EOL, 2 ) . '--' . PHP_EOL );

		return $message . $separator . $signature;
	}
public function append_signature( $message, $signature = '' ) {

		if ( empty( $signature ) ) {
			return $message;
		}

		$separator = apply_filters( 'iac_signature_separator', str_repeat( PHP_EOL, 2 ) . '--' . PHP_EOL );

		return $message . $separator . $signature;
	}
public function append_signature ( $ message , $ signature = '' ) { if ( empty ( $ signature ) ) { return $ message ; } $ separator = apply_filters ( 'iac_signature_separator' , str_repeat ( PHP_EOL , 2 ) . '--' . PHP_EOL ) ; return $ message . $ separator . $ signature ; }
apply a signature-text to the email message

@since 0.0.6 (2013.01.13)

@param string $message ,
@param string $signature (Optional)

@return string
apply a signature - text to the email message