Static library recommendation applied.

Project structure edited according this Apple recommendation:
https://developer.apple.com/library/ios/technotes/iOSStaticLibraries/Articles/creating.html#//apple_ref/doc/uid/TP40012554-CH2-SW1
"... If your library target has a “Copy Headers” build phase, you should delete it; copy headers build phases do not work correctly with static library targets when performing the “Archive” action in Xcode.

Next you will add a Copy Files build phase for exporting your headers. ..."

Some unneeded path deleted.