First attempt at #142. Needs a lot of work still.

app/Providers/CrudServiceProvider.php

@@ -0,0 +1,54 @@
+<?php
+/**
+ * CrudServiceProvider.php
+ * Copyright (C) 2016 thegrumpydictator@gmail.com
+ *
+ * This software may be modified and distributed under the terms
+ * of the MIT license.  See the LICENSE file for details.
+ */
+
+namespace FireflyIII\Providers;
+
+use FireflyIII\Exceptions\FireflyException;
+use Illuminate\Foundation\Application;
+use Illuminate\Support\ServiceProvider;
+
+/**
+ * Class CrudServiceProvider
+ *
+ * @package FireflyIII\Providers
+ */
+class CrudServiceProvider extends ServiceProvider
+{
+    /**
+     * Bootstrap the application services.
+     *
+     * @return void
+     */
+    public function boot()
+    {
+        //
+    }
+
+    /**
+     * Register the application services.
+     *
+     * @return void
+     */
+    public function register()
+    {
+        $this->app->bind(
+            'FireflyIII\Crud\Split\JournalInterface',
+            function (Application $app, array $arguments) {
+                if (!isset($arguments[0]) && $app->auth->check()) {
+                    return app('FireflyIII\Crud\Split\Journal', [$app->auth->user()]);
+                }
+                if (!isset($arguments[0]) && !$app->auth->check()) {
+                    throw new FireflyException('There is no user present.');
+                }
+
+                return app('FireflyIII\Crud\Split\Journal', $arguments);
+            }
+        );
+    }
+}