Harmonize exceptions

src/FFMpeg/Exception/BinaryNotFoundException.php

@@ -11,7 +11,7 @@
 
 namespace FFMpeg\Exception;
 
-class BinaryNotFoundException extends \Exception
+class BinaryNotFoundException extends \Exception implements Exception
 {
 
 }

src/FFMpeg/Exception/Exception.php

@@ -0,0 +1,17 @@
+<?php
+
+/*
+ * This file is part of PHP-FFmpeg.
+ *
+ * (c) Alchemy <info@alchemy.fr>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace FFMpeg\Exception;
+
+interface Exception
+{
+
+}

src/FFMpeg/Exception/InvalidFileArgumentException.php

@@ -11,7 +11,7 @@
 
 namespace FFMpeg\Exception;
 
-class InvalidFileArgumentException extends \InvalidArgumentException
+class InvalidFileArgumentException extends \InvalidArgumentException implements Exception
 {
 
 }

src/FFMpeg/Exception/LogicException.php

@@ -11,7 +11,7 @@
 
 namespace FFMpeg\Exception;
 
-class LogicException extends \LogicException
+class LogicException extends \LogicException implements Exception
 {
 
 }

src/FFMpeg/Exception/RuntimeException.php

@@ -11,7 +11,7 @@
 
 namespace FFMpeg\Exception;
 
-class RuntimeException extends \RuntimeException
+class RuntimeException extends \RuntimeException implements Exception
 {
 
 }