Added tags for Github builds.

src/PHPCensor/Migrations/20170420142131_added_tag_column_to_build_table.php

@@ -0,0 +1,24 @@
+<?php
+
+use Phinx\Migration\AbstractMigration;
+
+class AddedTagColumnToBuildTable extends AbstractMigration
+{
+    public function up()
+    {
+        $table = $this->table('build');
+
+        if (!$table->hasColumn('tag')) {
+            $table->addColumn('tag', 'string', ['limit' => 250, 'null' => true])->save();
+        }
+    }
+
+    public function down()
+    {
+        $table = $this->table('build');
+
+        if ($table->hasColumn('tag')) {
+            $table->removeColumn('tag')->save();
+        }
+    }
+}