added a screenshot

README.md

 VDT plugin
 ==========
+![VDT plugin screenshot](vdt_screenshot.png)
 
-There is a [video tutorial](http://blog.elphel.com/2016/05/tutorial-02-eclipse-based-fpga-development-environment-for-elphel-cameras) that shows installation of this plugin and related software.
+There is a [![Elphel video](http://community.elphel.com/pictures/icons/playbutton3-32.png) video tutorial](http://blog.elphel.com/2016/05/tutorial-02-eclipse-based-fpga-development-environment-for-elphel-cameras) that shows installation of this plugin and related software.
 
 Table of Contents                                                                                                                                                                                                                                                             
 -----------------
                                                                                                                                                                                                                                                              
   * [VDT plugin documentation](#vdt-plugin-documentation)
-  * [Instalation of VDT plugin and related programs](#instalation-of-vdt-plugin-and-related-programs)
+  * [Installation of VDT plugin and related programs](#installation-of-vdt-plugin-and-related-programs)
     * [Installation of Xilinx tools](#installation-of-xilinx-tools)
     * [Programs and libraries installed from (K)ubuntu repositories](#programs-and-libraries-installed-from-kubuntu-repositories)
       * [GtkWave (3.3.58-1)](#gtkwave-3358-1)
@@ -33,7 +34,7 @@ Table of Contents
 ##VDT plugin documentation
 Documentation is available in a separate [vdt_docs](https://github.com/Elphel/vdt-docs) repository.
 Here are some [screenshots](https://github.com/Elphel/vdt-docs/blob/master/VDT-UserManualAddendum.pdf)
-##Instalation of VDT plugin and related programs
+##Installation of VDT plugin and related programs
 VDT plugin for Eclipse is designed to integrate different tools for Verilog-based FPGA design.
 Currently it supports only GNU/Linux operating system and tool specification file support
 Icarus Verilog simulator and Xilinx ISE and Vivado Webpack design suites. It also works with Altera