- added screenshot

Author: janbender

README.md

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 # Latex4PowerPoint
 This is a Latex Add-In for Powerpoint. It enables to add and edit Latex equations or symbols in a Powerpoint slide easily. The Add-In is based on ScintillaNET and supports syntax highlighting, code snippets etc.
+
+With the add-in you can open a dialog, enter something like $y = \sum_{i=0}^n x_i$ and you will get an equation in your slide. This is done by embedding  your Latex code in a template. Then, latex.exe is called in order to create a DVI which is afterwards converted in a PNG file by Ghostscript. The PNG is then inserted in your slide. Your Latex code is stored in  the generated PowerPoint object. Hence, you can edit your code later.
+
+![screenshot](screenshot.jpg)
+
+## Install Add-In
+
+Download one of the release files and start the setup to install the add-in. The add-in should then be loaded automatically when starting PowerPoint the next time. 
+
+Be sure that you install the correct version (x86 or x64).
+
+## Build Add-In
+
+First, you need Visual Studio with C# support. We tested the build using Visual Studio 2019. 
+
+To build the add-in perform the following steps:
+
+* clone repository from GitHub
+* open solution file in Visual Studio
+* select correct platform (x86 or x64) depending on your PowerPoint version
+  * If you are not sure if you have a 32bit or 64bit version of PowerPoint, just start PowerPoint and open "File" -> "Account" -> "About PowerPoint".
+* build the add-in
+* start PowerPoint and the add-in should be loaded automatically