Add data that used to be served by data.pyne.io

[gonuke]

The main pyne repo refers to data served by data.pyne.io in N places:

• virtual machine (that was probably out of date anyway) pyne-0.5+yt.ova
• mcnp_n_impr_fluka.h5m sample data for plotting originally provided by @pshriwise as part of examples
• fng_userbin22.h5m sample data for plotting originally provided by @pshriwise as part of examples
• teapot.h5m sample data for visualization originally provided by @elliottbiondo
• kaeri.zip tarball of data from KAERI originally compiled by @scopatz
• prebuilt_nuc_data.h5 copy of prebuilt nuclear data originally compiled by @scopatz
• origen-benchmark-hdf5-1.8.13.h5 (and ...1.8.14.h5) provided for testing of decay. 1.8.13 version probably provided by @scopatz but 1.8.14 version probably provided by @kkiesling

[gonuke]

prebuild_nuc_data.h5 offered in #13

[ahnaf-tahmid-chowdhury]

I think http://data.pyne.io/ is not working, perhaps because the subdomain is not linked to the repository. In a past PR, I believe I updated the links and changed them to point directly to the repository. However, we can re-enable the data subdomain if necessary.