Added instructions for the Blender add-on.

README.md

@@ -1,13 +1,28 @@
 # geopy
 
-Python tools for manipulating .geo files, and Blender addon for exporting .geo files.
+Python tools for manipulating .geo files, and Blender add-on for exporting .geo files.
 
-#Blender Addon
+# Blender Add-On
 
-TODO: Write Blender addon installation and use instructions.
+The Blender add-on allows you to export .geo files.
+
+## Installing the Add-On
+
+1. Download geopy-v0.1.zip
+2. In Blender open "User Preferences" then select the "Add-ons" tab.
+3. Click the "Install Add-on from File..." button and select the downloaded zip.
+4. Enable the add-on and click the "Save User Preferences" button.
+
+## Using the Add-On
+
+1. Select the meshes to export in object mode.
+2. From the menu select File->Export->City of Heroes (.geo)
+3. Browse to the file you want to create and click "Export GEO".
 
 # Tools
 
+These command line tools allow inspection and modification of .geo files.
+
 ## geo.py
 Contains the Geo class, which represents the contents of .geo files. Can be run to test the reading and writing functionality.