XCode45-DP support

[czaku]

Any change to get it working? Now I get:

$ ZUCCHINI_DEVICE='iPhoneSimulator' zucchini run zucchini-demo/features/
Instruments Usage Error : Device failed to become ready for use.
/Library/Ruby/Gems/1.8/gems/zucchini-ios-0.5.5/lib/feature.rb:70:in collect': Instruments run error (RuntimeError) from /Library/Ruby/Gems/1.8/gems/zucchini-ios-0.5.5/lib/feature.rb:87:inwith_setup'
from /Users/lczak/Projects/CoreDataBooks/zucchini-demo/features/add_book/setup.rb:4:in before' from /Library/Ruby/Gems/1.8/gems/zucchini-ios-0.5.5/lib/feature.rb:87:inwith_setup'
from /Library/Ruby/Gems/1.8/gems/zucchini-ios-0.5.5/lib/feature.rb:60:in collect' from /Library/Ruby/Gems/1.8/gems/zucchini-ios-0.5.5/lib/runner.rb:33:inrun'
from /Library/Ruby/Gems/1.8/gems/zucchini-ios-0.5.5/lib/runner.rb:27:in each' from /Library/Ruby/Gems/1.8/gems/zucchini-ios-0.5.5/lib/runner.rb:27:inrun'
from /Library/Ruby/Gems/1.8/gems/zucchini-ios-0.5.5/lib/runner.rb:21:in execute' from /Library/Ruby/Gems/1.8/gems/clamp-0.4.0/lib/clamp/command.rb:75:inexecute'
from /Library/Ruby/Gems/1.8/gems/clamp-0.4.0/lib/clamp/command.rb:66:in run' from /Library/Ruby/Gems/1.8/gems/clamp-0.4.0/lib/clamp/command.rb:128:inrun'
from /Library/Ruby/Gems/1.8/gems/zucchini-ios-0.5.5/bin/zucchini:19
from /usr/bin/zucchini:19:in `load'
from /usr/bin/zucchini:19