Add migration for sql cache backend

migrations/20160404202433_cache_migration.php

@@ -0,0 +1,35 @@
+<?php
+
+use Phinx\Migration\AbstractMigration;
+
+class CacheMigration extends AbstractMigration
+{
+    /**
+     * Change Method.
+     *
+     * Write your reversible migrations using this method.
+     *
+     * More information on writing migrations is available here:
+     * http://docs.phinx.org/en/latest/migrations.html#the-abstractmigration-class
+     *
+     * The following commands can be used in this method and Phinx will
+     * automatically reverse them when rolling back:
+     *
+     *    createTable
+     *    renameTable
+     *    addColumn
+     *    renameColumn
+     *    addIndex
+     *    addForeignKey
+     *
+     * Remember to call "create()" or "update()" and NOT "save()" when working
+     * with the Table class.
+     */
+    public function change()
+    {
+		$this->table('cache', ['id' => FALSE, 'primary_key' => ['key']])
+			->addColumn('key', 'text')
+			->addColumn('value', 'text')
+			->create();
+    }
+}