Fix pah execution. Rename missing file call

Fix creation of a new project.

The error:

```ruby
Adding default files ...
      remove      app/assets/stylesheets/reset.css
The template [/Users/eduardofiorezi/projects/pah/lib/pah/template.rb] could not be loaded.
Error: No such file or directory - /Users/eduardofiorezi/projects/pah/lib/pah/files/app/assets/stylesheets/reset.css
```