Add schema version and correct url

The package never actually appeared in Package Control (at least not on the new site).

Also, since you were using the master branch but flagging that with an explicit version this would result in every user getting the latest commit from master but still having that flagged as version 1.0.0. This in fact means that everyone, despite being on the same verison, would have a different copy.

Please take a look at the new 2.0 schema ([example file](https://github.com/wbond/sublime_package_control/blob/master/example-repository.json)) and consider adding your package directly to the [main channel](https://github.com/wbond/package_control_channel/).