Added per-component subscriptions. Closes #734

database/migrations/2016_01_09_141852_CreateSubscriptionsTable.php

@@ -0,0 +1,42 @@
+<?php
+
+/*
+ * This file is part of Cachet.
+ *
+ * (c) Alt Three Services Limited
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+class CreateSubscriptionsTable extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        Schema::create('subscriptions', function (Blueprint $table) {
+            $table->increments('id');
+            $table->integer('subscriber_id')->unsigned()->index();
+            $table->integer('component_id')->unsigned()->index();
+            $table->timestamps();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        Schema::drop('subscriptions');
+    }
+}