[ADD] Description about the installer

README.md

@@ -3,12 +3,13 @@
 ## INTRODUCTION
 PPT NDI transfers PowerPoint presentations via NDI technology released by NewTek. Can be also used as a character generator because it supports transparency.
 
-The latest version is PPT NDI (20190405).
+The latest version is PPT NDI (20190427).
 
 ## HOW TO USE
-1. Download the ppt_ndi_20190405.7z from https://github.com/ykhwong/ppt_ndi/releases and extract it.
-2. Simply run the executable "ppt_ndi.exe"
-3. Please select either one of the following modes.
+1. Download PPT NDI from https://github.com/ykhwong/ppt_ndi/releases
+2. If you have downloaded the installer, execute the pptndi_setup.exe. After the installation, click Start button and select "PPT NDI".
+3. If you have downloaded the 7z file, decompress it and simply run the executable "ppt_ndi.exe"
+4. Please select either one of the following modes.
 
 * PowerPoint SlideShow Mode
 * Classic Mode
@@ -65,6 +66,12 @@ For the best result, please set the slide resolution properly.
 3. A shortcut of the vbs file will be created.
 4. Restart the computer and it will be automatically executed on startup or boot.
 
+### Sample
+
+Please also refer to the sample.pptx that demonstrates the lower thirds:
+
+https://github.com/ykhwong/ppt_ndi/raw/master/resources/sample.pptx
+
 ## REQUIREMENT
 * Microsoft PowerPoint
 * Microsoft Windows 7 or higher (x86-64 only)