diff --git a/README.md b/README.md
index 18aff44..02671cf 100644
--- a/README.md
+++ b/README.md
@@ -1,10 +1,15 @@
 # imcat
 
-Preview any size image in a terminal window. No X11 required.
+Preview any size image in a terminal window.
 
 
 ![Sample use](images/sampledesktop.png "Sample use.")
 
+# Platform
+
+Supports Linux, MacOS and Microsoft Windows 10 terminals.
+
+
 ## Introduction
 
 Do you ever find yourself logged into a server, over SSH, but there is no X11 connection.
@@ -15,9 +20,18 @@ imcat to the rescue!
 imcat is a 24-bit image viewer that uses ANSI terminal colours to display any image supported by STB.
 It automatically resizes to the width of your terminal, using proper sampling kernels.
 
+imcat also works on the latest version of Windows 10.
+
+
 ## To do
 * Correct for aspect ratio of terminal font.
 
+## Building
+
+On linux, just use 'make' to build the imcat binary.
+
+On Windows, you need clang.exe from Visual Studio 2017 to build the imcat.exe binary.
+
 ## License
 
 * Public Domain.