rubymotion/BubbleWrap — pull request #169 by nov (2012-11-09 09:55:47+00:00)
Title: The expression "App::Persistent[key] = value" should return value, instead of boolean.

For example

```ruby
def nonce(refresh = false)
App::Persistent[:nonce] = nil if refresh
App::Persistence[:nonce] ||= NSUUID.UUID.UUIDString
end

App::Persistence[:nonce] # => nil
nonce # => true (String expected)
nonce # => "96FC8AAA-E1F2-4919-9D64-D189B771258D" (as expected)
nonce(:refresh) # => true (String expected)
```