Extracted lcdbridge and added first signs of RPI B+ to pi mapper

lib/InterruptHandler.php

@@ -0,0 +1,12 @@
+<?php
+
+namespace NoccyLabs\LinuxGpio;
+
+class InterruptHandler  
+{
+    public function setInterrupt(Gpio $pin, $edge = null, callable $handler = null)
+    {
+    }
+    
+}
+