Update and rename Bookstack.php to BookStack.php

app/SupportedApps/BookStack.php

@@ -0,0 +1,14 @@
+<?php namespace App\SupportedApps;
+
+class BookStack implements Contracts\Applications {
+    
+    public function defaultColour()
+    {
+        return '#02679E';
+    }
+    public function icon()
+    {
+        return 'supportedapps/bookstack.png';
+    }
+   
+}