Slight changes for cleaner templates.

Just started using Yeoman and tried out this template the other day. It's very useful although I think there are a few changes that really make it feel a bit more "optimized" for Node-Webkit developers. 

First I disabled the address bar (`toolbar`) because I doubt many projects call for it. With that gone, something should be rendered that shows that the app loads and is working. So I just dropped in an `h1` and `p` for the name and description.

I typically generate my project and then immediately run it to verify everything is in working order. While these changes are very minor, they remove one more step that most of us would have to do anyways.