testflight notes should be escaped

[dentarg]

The problem:

$ bundle exec rake testflight notes='Added "John Doe iPhone 4S" to the Provisioning Profile'
...

       Run /usr/bin/curl http://testflightapp.com/api/builds.json -F file=@"./build/iPhoneOS-5.1-Development/MyApp.ipa" -F dsym=@"./build/iPhoneOS-5.1-Development/MyApp.dSYM.zip" -F api_token='removed' -F team_token='removed' -F notes="Added "John Doe iPhone 4S" to the Provisioning Profile" -F notify=True
{
...
    "release_notes": "Added John", 
    "binary_size": 1088533
}
curl: (6) Could not resolve host: Doe; nodename nor servname provided, or not known
curl: (6) Could not resolve host: iPhone; nodename nor servname provided, or not known

I solved it with

rake testflight notes='Added \"John Doe iPhone 4S\" to the Provisioning Profile'

but maybe you could escape the notes string before using it with curl?