PR for #47https://github.com/indirect/haml-rails/issues/47
Usage
Once you install haml-rails gem, you can run the following command
to convert application.html.erb to application.html.haml.
`$ rails generate haml:application_layout convert`
or
`$ rails g haml:application_layout convert`
Bundler (>= 1.3) says:
```
The source :gemcutter is deprecated because HTTP requests are insecure.
Please change your source to 'https://rubygems.org' if possible, or
'http://rubygems.org' if not.
```