Adds Pyro::Manifest

- [x] Create a manifest.yml file to tell Ember what to build
- [x] Break up the starter kit into an app structure
- [x] Build the app from the manifest
- [x] Convert to .coffee and .scss and build again
- [x] Handle templates (.hbs, .handlebars)
- [x] Support environment specific blocks
- [x] Compress the output files in production
- [x] Update the template app