Strip leading slash in template name

I couldn't get Ember to find the templates unless I used this patch. Basically, without the patch, I get something like:

    Ember.TEMPLATES["/application"] = Ember.Handlebars.template(function ...

That leading slash in `"/application"` is causing the problem. This patch removes it to yield:

    Ember.TEMPLATES["application"] = Ember.Handlebars.template(function ...