Initial and unofficial release of chrome extension

To try out the extension:

1. Download the file
2. Go to chrome://extensions in your chrome browser
3. Drag and drop the file onto the window
4. Approve permissions requests
5. Visit heroku and check out the confirmation dialog that pops up

Fair warning. The current version will throw a confirmation dialog for every page you visit on that site. So heroku.com->heroku.com/login both will end up throwing the confirmation dialog. This will be fixed soon.