Merge branch 'sphere' into 'master'

.gitignore

src/Makefile

src/README.md

src/include/Commons.h

src/include/Configuration.h

src/include/List.h

src/include/Parsers.h

src/include/sph_subs.h

src/libnptm/Commons.cpp

src/libnptm/Configuration.cpp

src/libnptm/Parsers.cpp

src/np_sphere.cpp

src/sphere/Makefile

src/sphere/sph.f

src/sphere/sphere.cpp