Integrate Yii 1.1.16 with Piwik

Hi, I would like to add Piwik Analytics to my Yii application. I’m using PostgreSQL database, and i found

*/sri-soham/piwik (Piwik integrated with Postgres). My problems starts when i want to add Piwik to Yii application.

From the * /sri-soham/piwik

[i]Upload piwik to your webserver

Point your browser to the directory [/i]

How can i achieve this? I added Piwik to the directory under Yii application (protected/extensions/). But this directory is invisible from the browser… Could anyone give me some suggestion?