fixed the examples

examples/example_fc3.php

@@ -1,19 +1,18 @@
 <?php
 
-require_once dirname(__FILE__) . '/../Phpmodbus/ModbusMaster.php';
+use PHPModbus\ModbusMaster;
 
 // Create Modbus object
 $modbus = new ModbusMaster("192.192.15.51", "UDP");
 
 try {
-    // FC 3
-    $recData = $modbus->readMultipleRegisters(0, 12288, 6);
-}
-catch (Exception $e) {
-    // Print error information if any
-    echo $modbus;
-    echo $e;
-    exit;
+	// FC 3
+	$recData = $modbus->readMultipleRegisters(0, 12288, 6);
+} catch (Exception $e) {
+	// Print error information if any
+	echo $modbus;
+	echo $e;
+	exit;
 }
 
 // Print status information
@@ -21,6 +20,5 @@ echo "</br>Status:</br>" . $modbus;
 
 // Print read data
 echo "</br>Data:</br>";
-print_r($recData); 
+print_r($recData);
 echo "</br>";
-?>