Added Windows support (in theory)

native-messaging/README.md

@@ -4,9 +4,28 @@ The WebExtension, which can be found under "add-on", connects to the native appl
 
 The native application, which can be found under "app", listens for messages from the WebExtension. When it receives a message, the native application sends a response message whose payload is just "pong". The native application is written in Python.
 
-To get this working, there's a little setup to do:
+## Setup ##
 
-* edit the "path" property of "app/ping_pong.json" to point to the location of "app/ping_pong.py" on your computer
-* copy "app/ping_pong.json" to the correct location on your computer. See [host manifest locations]() to find the correct location for your OS.
+To get this working, there's a little setup to do.
+
+### Mac OS/Linux setup ###
+
+* Check that the [file permissions](https://en.wikipedia.org/wiki/File_system_permissions) for "ping_pong.py" include the `execute` permission.
+* Edit the "path" property of "ping_pong.json" to point to the location of "ping_pong.py" on your computer.
+* copy "ping_pong.json" to the correct location on your computer. See [Host Manifests ](https://wiki.mozilla.org/WebExtensions/Native_Messaging#Host_Manifests) to find the correct location for your OS.
+
+### Windows setup ###
+
+* Check you have Python installed.
+* Edit "ping_pong_win.bat" so it contains the path to "ping_pong.py" on your computer.
+* Edit the "path" property of "ping_pong_win.json" to point to the location of "ping_pong_win.bat" on your computer.
+* Add a registry key containing the path to "ping_pong_win.json" on your computer. See [Host Manifests ](https://wiki.mozilla.org/WebExtensions/Native_Messaging#Host_Manifests) to find details of the registry key to add.
+
+## Testing the example ##
 
 Then just install the add-on as usual, by visiting about:debugging, clicking "Load Temporary Add-on", and selecting the add-on's "manifest.json".
+
+You should see a new browser action icon in the toolbar. Open the console ("Tools/Web Developer/Browser Console" in Firefox), and click the browser action icon. You should see output like this in the console:
+
+    Sending: ping
+    Received: pong

native-messaging/app/ping_pong_win.bat

@@ -0,0 +1,3 @@
+@echo off
+
+python "path\to\your\ping_pong.py"

native-messaging/app/ping_pong_win.json

@@ -0,0 +1,7 @@
+{
+  "name": "ping_pong",
+  "description": "Example host for native messaging",
+  "path": "ping_pong_win.bat",
+  "type": "stdio",
+  "allowed_extensions": [ "ping_pong@example.org" ]
+}