Add 'Installation' section to the README

Fixes #6.

README.md

@@ -5,6 +5,7 @@
 --------------------------------------
 
 * [Overview](#overview)
+* [Installation](#installation)
 * [API reference](#api-ref)
   * [zookeper.init()](#zk-init)
   * [zookeeper.zerror()](#zk-zerror)
@@ -42,6 +43,28 @@ ZooKeeper is a distributed application for managing and coordinating a large num
 
 [Back to TOC](#toc)
 
+## <a name="installation"></a>Installation
+
+Using a package manager (CentOS, Fedora, Debian, Ubuntu):
+
+* [Add][tarantool_repo] a tarantool repository.
+* Install tarantool-zookeeper package.
+
+Using tarantoolctl rocks:
+
+* Install dependencies:
+  - CentOS / Fedora: tarantool-devel, zookeeper-native
+    ([full list][deps_centos]).
+  - Debian / Ubuntu: tarantool-dev, libzookeeper-st-dev, libzookeeper-st2
+    ([full list][deps_debian]).
+* tarantoolctl rocks install zookeeper
+
+[Back to TOC](#toc)
+
+[tarantool_repo]: https://tarantool.io/en/download/
+[deps_centos]: https://github.com/tarantool/zookeeper/blob/master/rpm/tarantool-zookeeper.spec#L9-L16
+[deps_debian]: https://github.com/tarantool/zookeeper/blob/master/debian/control#L5-L15
+
 ## <a name="api-ref"></a>API reference
 --------------------------------------
 

README_ru.md

@@ -5,6 +5,7 @@
 -------------------------------
 
 * [Что такое ZooKeeper](#overview)
+* [Установка](#installation)
 * [Справочник по API](#api-ref)
   * [zookeeper.init()](#zk-init)
   * [zookeeper.zerror()](#zk-zerror)
@@ -51,6 +52,28 @@ ZooKeeper - это распределенное приложение для уп
 
 [К содержанию](#toc)
 
+## <a name="installation"></a>Установка
+
+С помощью пакетного менеджера (CentOS, Fedora, Debian, Ubuntu):
+
+* [Добавить][tarantool_repo] репозиторий tarantool.
+* Установить пакет tarantool-zookeeper.
+
+С помощью tarantoolctl rocks:
+
+* Установить зависимости:
+  - CentOS / Fedora: tarantool-devel, zookeeper-native
+    ([полный список][deps_centos]).
+  - Debian / Ubuntu: tarantool-dev, libzookeeper-st-dev, libzookeeper-st2
+    ([полный список][deps_debian]).
+* tarantoolctl rocks install zookeeper
+
+[К содержанию](#toc)
+
+[tarantool_repo]: https://tarantool.io/ru/download/
+[deps_centos]: https://github.com/tarantool/zookeeper/blob/master/rpm/tarantool-zookeeper.spec#L9-L16
+[deps_debian]: https://github.com/tarantool/zookeeper/blob/master/debian/control#L5-L15
+
 ## <a name="api-ref"></a>Справочник по API
 ------------------------------------------