diff --git a/.gitignore b/.gitignore
index 70f0875..fc68621 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,6 +1,5 @@
-assets/*
-!assets/.gitignore
-protected/runtime/*
-!protected/runtime/.gitignore
-protected/data/*.db
-themes/classic/views/
+/.idea
+/nbproject
+/vendor
+/*.lock
+/*.cache
diff --git a/README.md b/README.md
index dc76bec..513987a 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,16 @@
-# yii2-extension
-Template package for Yii2 extensions
+Yii2 extension template
+=======================
+Package template for Yii2 extension
+
+Installation
+------------
+The preferred way to install this extension is through [Composer](https://getcomposer.org/download/).
+Either run:
+```bash
+composer require --prefer-dist ensostudio/yii2-extension "*"
+```
+or add
+```
+"ensostudio/yii2-extension": "*"
+```
+to the require section of your `composer.json` file.
diff --git a/composer.json b/composer.json
new file mode 100644
index 0000000..864811d
--- /dev/null
+++ b/composer.json
@@ -0,0 +1,36 @@
+{
+    "name": "ensostudio/yii2-extension",
+    "description": "Package template for Yii2 extension",
+    "keywords": ["yii2", "extension", "ensostudio"],
+    "type": "yii2-extension",
+    "license": "MIT",
+    "authors": [
+        {
+            "name": "Enso studio",
+            "email": "info@ensostudio.ru"
+        }
+    ],
+    "require": {
+        "php": "^7.1",
+        "yiisoft/yii2": "^2.0"
+    },
+    "require-dev": {
+        "roave/security-advisories": "dev-latest"
+    },
+    "autoload": {
+        "psr-4": {
+            "EnsoStudio\\Yii2Extension\\": "src/"
+        }
+    },
+    "autoload-dev": {
+        "psr-4": {
+            "EnsoStudio\\Yii2Extension\\": "tests/"
+        }
+    },
+    "repositories": [
+        {
+            "type": "composer",
+            "url": "https://asset-packagist.org"
+        }
+    ]
+}
\ No newline at end of file
diff --git a/src/Extension.php b/src/Extension.php
new file mode 100644
index 0000000..e9fb6fe
--- /dev/null
+++ b/src/Extension.php
@@ -0,0 +1,20 @@
+<?php
+
+namespace EnsoStudio\Yii2Extension;
+
+use yii\base\BootstrapInterface;
+
+/**
+ * This is just an example.
+ */
+class Extension implements BootstrapInterface
+{
+    /**
+     * @param \yii\base\Application $app the application currently running
+     * @return void
+     */
+    public function bootstrap($app): void
+    {
+        // @todo
+    }
+}