added a print utilty to pca_tools
added a print utilty to pca_tools

Leotrinos/agpy,Leotrinos/agpy,jcesardasilva/agpy,ufoym/agpy,jcesardasilva/agpy,ufoym/agpy,tectronics/agpy,Leotrinos/agpy,tectronics/agpy,jcesardasilva/agpy,tectronics/agpy,Leotrinos/agpy,tectronics/agpy,ufoym/agpy,ufoym/agpy,jcesardasilva/agpy