update paths

lib/gpio/source/Pin.php

@@ -15,7 +15,7 @@
 		private $value;
 
 		public function __construct($pin){
-			if( !is_int($pin) )
+			if( !preg_match('@^\d+$@', $pin) )
 				throw new Exception("pin must be an integer");
 
 

lib/gpio/source/high.php

@@ -22,6 +22,8 @@
 		/* (2) Set mode to in */
 		$gpio->value = Pin::GPIO_HIGH;
 
+		return 0;
+
 	}
 
 

lib/gpio/source/in.php

@@ -22,6 +22,8 @@
 		/* (2) Set mode to in */
 		$gpio->mode = Pin::GPIO_IN;
 
+		return 0;
+
 	}
 
 

lib/gpio/source/low.php

@@ -22,6 +22,8 @@
 		/* (2) Set mode to in */
 		$gpio->value = Pin::GPIO_LOW;
 
+		return 0;
+
 	}
 
 

lib/gpio/source/out.php

@@ -22,6 +22,8 @@
 		/* (2) Set mode to in */
 		$gpio->mode = Pin::GPIO_OUT;
 
+		return 0;
+
 	}