update for meteor 0.9

This update is to make it compatible with meteor 0.9. To publish to the new package system, we need to modify the `package.js` and `smart.json`. I'm not sure what you developer account is, so I didn't include that part in this pull request. You can reference my fork <https://github.com/waitingkuo/meteor-jade> . I've also released it as a temporary solution, you can try it by `meteor add waitingkuo:meteor-jade`