connection options: no ssl verify & basic auth

New connections options for:
- logging in with basic auth
- disabling SSL certificate verification

```ruby
class Ticket < Roart::Ticket
  connection(
    :server => 'https://rt.example.com', :user => 'chrisdambrosio', :pass => 'rtpassword',
    :auth_method => :basic, # basic auth
    :ssl_verify  => :none   # disable ssl cert verification
  )
end
```