Add a link to Fedora's cgit from the package chrome.

This fixes issue #14.

There is an issue with the icon size though:
![cgit_icon_size_issue](https://f.cloud.github.com/assets/2518544/917290/7ae24236-fea1-11e2-9555-504f78040f53.png)

I don't know what would be the best fix for it. Maybe just scaling-down the [icon](https://apps.fedoraproject.org/img/icons/git-logo.png)?