Add gendoc script and update README.md

DESC.md

+# Attachments Server Components
+
+This repository provides components for building attachments server.
+
+# Usage
+
+Include module in your project using `npm`.
+
+```
+npm install --save attachments-components
+```
+
+and add this to your code
+
+```
+let components = require("attachments-components");
+```
+
+Object `module.exports` provides all necessary components.

README.md

-# Компоненты сервера вложений
+# Attachments Server Components
 
-Данный репозиторий хранит компоненты, необходимые для создания сервера вложений
+This repository provides components for building attachments server.
 
-# Использование
+# Usage
 
-Подключить модуль с помощью `npm`.
+Include module in your project using `npm`.
 
 ```
-let components = require("attachments-components");
+npm install --save attachments-components
 ```
 
-В  module.exports модуля находятся все необходимые компоненты.
+and add this to your code
 
+```
+let components = require("attachments-components");
+```
 
+Object `module.exports` provides all necessary components.
 ## Classes
 
 <dl>
@@ -126,7 +130,9 @@ attachments.
 
 * [Ipfs](#Ipfs)
     * [new Ipfs()](#new_Ipfs_new)
+    * [.pin(hash)](#Ipfs+pin) ⇒ <code>Promise</code>
     * [.serve(hash)](#Ipfs+serve) ⇒ <code>Promise</code>
+    * [.unpin(hash)](#Ipfs+unpin) ⇒ <code>Promise</code>
     * [.upload(file)](#Ipfs+upload) ⇒ <code>Promise</code>
 
 <a name="new_Ipfs_new"></a>
@@ -134,6 +140,18 @@ attachments.
 ### new Ipfs()
 constructor for Ipfs class.
 
+<a name="Ipfs+pin"></a>
+
+### ipfs.pin(hash) ⇒ <code>Promise</code>
+Stores an IPFS object from a given path locally to disk.
+
+**Kind**: instance method of <code>[Ipfs](#Ipfs)</code>  
+**Returns**: <code>Promise</code> - Pinned object.  
+
+| Param | Type | Description |
+| --- | --- | --- |
+| hash | <code>String</code> | IPFS hash. |
+
 <a name="Ipfs+serve"></a>
 
 ### ipfs.serve(hash) ⇒ <code>Promise</code>
@@ -146,6 +164,19 @@ Serves attachment to the client.
 | --- | --- | --- |
 | hash | <code>String</code> | IPFS hash. |
 
+<a name="Ipfs+unpin"></a>
+
+### ipfs.unpin(hash) ⇒ <code>Promise</code>
+Removes the pin from the given object allowing it to be garbage
+collected if needed.
+
+**Kind**: instance method of <code>[Ipfs](#Ipfs)</code>  
+**Returns**: <code>Promise</code> - Unpinned object.  
+
+| Param | Type | Description |
+| --- | --- | --- |
+| hash | <code>String</code> | IPFS hash. |
+
 <a name="Ipfs+upload"></a>
 
 ### ipfs.upload(file) ⇒ <code>Promise</code>

gendoc.sh

+#!/bin/bash
+
+find ./components/ -type f -name "*.js" -print0 | xargs -0 ./node_modules/.bin/jsdoc2md > DOCS.md
+cat DESC.md DOCS.md > README.md