documentation update

Author: ddmitov

README.md

@@ -10,6 +10,7 @@ Perl Executing Browser (PEB) is an HTML5 user interface for [Perl 5](https://www
 
 ## Contents
 
+* [Quick Start](#quick-start)
 * [Design Objectives](#design-objectives)
 * [Features](#features)
 * [Security](#security)
@@ -42,6 +43,60 @@ The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
 "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY" and "OPTIONAL"  
 in the documentation of this project are to be interpreted as described in [RFC 2119](https://www.ietf.org/rfc/rfc2119.txt).  
 
+## Quick Start
+
+* **1.** [Download the PEB Demo Application](https://github.com/ddmitov/perl-executing-browser/releases/latest).  
+  64-bit Linux single-file [AppImage](https://appimage.org/) executable and  
+  32-bit Windows self-extracting ZIP archive are available.  
+  They include everything you need to start developing PEB-based applications.
+
+* **2.** Unpack:
+
+  64-bit Linux:
+  ```bash
+  peb-demo-xx.AppImage --appimage-extract
+  ```
+
+  Windows:
+  Unzip using any Windows unzip utility.
+
+* **3.** Optionally install any CPAN modules you may need:
+
+  64-bit Linux - from the extracted ``peb-demo`` directory:
+  ```bash
+  cd resources/app/perl/bin
+  ./perl ./cpanm YourModule
+  ```
+
+  Windows - from the extracted ``peb-demo`` directory:
+  ```batchfile
+  cd resources\app\perl
+  .\portableshell.bat
+  cpanm YourModule
+  ```
+
+* **4.** Write your Perl application reading user input on STDIN:
+
+  ```perl
+  my $input = <STDIN>;
+  chomp $input;
+  ```
+
+* **5.** Write a ``{PEB_executable_directory}/resources/app/index.html`` with  
+  a [settings JavaScript object](./doc/SETTINGS.md#perl-scripts-api) for every Perl script you want to use.  
+  Start local Perl scripts by [clicking a link or submitting a form to a special URL](./doc/SETTINGS.md#perl-scripts-api).  
+  [Select files or folders with their full paths by clicking a link to a special URL](./doc/SETTINGS.md#selecting-files-and-folders).
+
+* **6.** Optionally pack your application:
+
+  64-bit Linux - from the extracted ``peb-demo`` directory:
+  ```bash
+  ./appimager.sh
+  ```
+
+  Windows:
+  Zip your PEB-based application using any Windows zip utility.
+
 ## Design Objectives
 
 * **1. Easy and beautiful graphical user interface for Perl 5 desktop applications**