language: objective-c
xcode_project: CheckboxButton.xcodeproj
xcode_scheme: CheckboxButton
osx_image: xcode7
xcode_sdk: iphonesimulator9.0

language: objective-c
xcode_project: CheckboxButton.xcodeproj
xcode_scheme: CheckboxButton
osx_image: xcode8
xcode_sdk: iphonesimulator10.0

Update osx_image and xcode_sdk to Xcode 8 / iOS 10
Update osx_image and xcode_sdk to Xcode 8 / iOS 10
