secret_generator can easily create a self-signed certificate.

    $ gem install secret_generator

#Excecute.

    $ secret_generator [hostname]

If Once you have omitted the host name of the argument, the host name of the machine will be used.

Result is output to current directory.

secret.key
public.key

1. Fork it ( https://github.com/0xfffffff7/secret_generator/fork )
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create a new Pull Request