I just downloaded the ATK and I cannot even test the MathWidgetSample in a device. With Xcode 7.0.1 and trying to run it in an iPad Air 1 (iOS 9.0.1), I get the following error:
ld: -U and -bitcode_bundle (Xcode setting ENABLE_BITCODE=YES) cannot be used together
clang: error: linker command failed with exit code 1 (use -v to see invocation)
I tried to create a new project from scratch and follow the steps to link libraries and all... but it won't work, neither in device or simulator.
Thanks for your bug report.
Unfortunately the current packages are not yet compatible with this new XCode 7 option. As a workaround, you will have to disable the flag 'ENABLE_BITCODE' under the build settings of the XCode project.
Please accept our apologies for this limitation.