Add installation instructions

diff --git a/README.md b/README.md
index 2d5e7255f48b3ded0675f81900a69b84ccdd6711..96309f079a5fc1287daf042fa4e25c7dc85b28d3 100644 (file)
--- a/README.md
+++ b/README.md
@@ -7,7 +7,24 @@ annotating module APIs in specs and other documents.
 
 ### From Command Line
 
-TBD
+`code --install-extension api-notation`
+
+### From GUI
+
+#### Open the Extension Manager from Palette Manager
+
+1. Press `⌘⇧P` on OSX or `⌃⇧P` on Windows/Linux to open the palette manager
+2. Look for `Install Ext4ensions
+
+#### Open the Package Manager from Preferences
+
+1. Go to `Code -> Preferences -> Extensions` menu item
+
+#### Install it
+
+1. Search for `api-notation` in the search bar
+2. Click Install
+
 
 ## Usage