TypeError at / no implicit conversion of nil into String

```RUBY
require 'innate'

class Hi

  include Innate::Node
  map '/'
     

  def index
    #"Hello, World!"
      render_view  :index 
     
  end
end

Innate.start #  :adapter => :mongrel

```
view/index.erb
```HTML
<h1>test </h1>
```