fix OSX Mavericks issues and add specimen_k_prime
fix OSX Mavericks issues and add specimen_k_prime

Caoimhinmg/PmagPy,lfairchild/PmagPy,Caoimhinmg/PmagPy,lfairchild/PmagPy,lfairchild/PmagPy,Caoimhinmg/PmagPy