clearsightstudio/ProMotion — pull request #180 by toshiwo (2013-06-28 19:32:19+00:00)
Title: change open_screen return a screen

hi, change branch version-1.0 ( https://github.com/clearsightstudio/ProMotion/pull/178 )

I came up with this idea when I was using modal view.

before:
```ruby
def action_open_modal
@modal_screen = ModalScreen.new
open @modal_screen, moda: true
end
```

after:
```ruby
def action_open_modal
@modal_screen = open ModalScreen, moda: true
end
```