Update README.md

Author: mongAlvarez

README.md

@@ -6,7 +6,24 @@ this is the very first release, there are too many things you can add here
 why do we need a file explorer?
 when you want to write an operating system, this is a must 
 
-To compile/run, just use PureBasic IDE, that's very fast and simple for simple programs like these.
+to compile/run, just use PureBasic IDE, that's very fast and simple for simple programs like these
+
+>just put everything inside DIRECTORY_101
+>then run EXPLORER_LISTVIEW_V1.exe
+>you will be seeing those things,
+
+for Documents, the default file extensions are:
+.txt
+.pdf
+.docx
+
+for Videos, the default file extensions are:
+.mp4
+.avi
+
+for Pictures, the default file extensions are:
+.png
+.jpg