Adding link to install `azk` instructions

# PHP Translation Kit

##### Install azk and Start Project

1. [Install](http://docs.azk.io/pt-BR/installing/README.html) `azk`.

2. Clone the application locally:

      ```bash
      $ git clone https://github.com/azukiapp/php-translation
      ```

3. Execute the application:

      ```bash
      $ cd php-translation
      $ azk start --open
      ```

  > NOTE:the first boot may take a few minutes because it will make downloading the images and provisioning systems