Please refer to the document here for the detail steps. Before you begin, here's the pre-requisite:
- Must be on Dev channel already. I'm using 6.0.490.1 dev.
- Successful install the 3 sample web apps from Google.
Now, make an empty folder to store all your files there.
- Download Google Reader icons files (all: 32,48, 64, 128) from here and put in the the folder.
- Create a blank text file called "manifest.json", and paste the following into it.
{"name": "Google Reader","description": "Read your rss","version": "1","app": {"urls": ["*://www.google.com/reader/view/","*://www.google.com/reader/"],"browse_urls": ["https://www.google.com/accounts/"],"launch": {"web_url": "http://www.google.com/reader/"}},"icons": {"32": "32.png","48": "48.png","64": "64.png","128": "128.png"},"permissions": ["unlimited_storage","notifications"]}
- Goto chrome extension page to load unpacked extension (like how you load the 2 samples).
Congratulation, you just create your first web apps! Here is the screenshot on my laptop (press ctrl-T).