Fix for these "remove warning" and a "fix for that" commits:
  64808bdf2413af95a33a92ae7ecf6700f35a95d1 and
  be25289a61486ba73a21ff97c48d1378619de9c9.
Seems that both variants uses private api which does break the support
for Cocoapods 0.16.4 (first try be2528…) and 0.16.0 (64808b…).
Sorry for reverting this but a working version must be prefered over
"remove some warnings". I try to remove the same header with removing
them from the source_files. If anything doesn't work anymore please
re-add these headers (only).
Reorder file references into header, sources, resources.