add spheric paper, data, and figures.

theory/paper_spheric/IEEEtran.cls

theory/paper_spheric/data/CosmoVolume_fixed.totals

theory/paper_spheric/data/CosmoVolume_fixed_Gadget2.totals

theory/paper_spheric/data/Cosmo_fixed/performance_1.dat

theory/paper_spheric/data/Cosmo_fixed/performance_10.dat

theory/paper_spheric/data/Cosmo_fixed/performance_12.dat

theory/paper_spheric/data/Cosmo_fixed/performance_16.dat

theory/paper_spheric/data/Cosmo_fixed/performance_2.dat

theory/paper_spheric/data/Cosmo_fixed/performance_20.dat

theory/paper_spheric/data/Cosmo_fixed/performance_24.dat

theory/paper_spheric/data/Cosmo_fixed/performance_28.dat

theory/paper_spheric/data/Cosmo_fixed/performance_3.dat

theory/paper_spheric/data/Cosmo_fixed/performance_32.dat

theory/paper_spheric/data/Cosmo_fixed/performance_4.dat

theory/paper_spheric/data/Cosmo_fixed/performance_48.dat

theory/paper_spheric/data/Cosmo_fixed/performance_6.dat

theory/paper_spheric/data/Cosmo_fixed/performance_8.dat

theory/paper_spheric/data/SedovBlast_exact_10.dat

theory/paper_spheric/data/SedovBlast_exact_15.dat

theory/paper_spheric/data/SedovBlast_exact_20.dat