unit test largely working (only calculations)
begin data unit tests
working on data tests
more work on unit testing
data tests mostly done
using nose for tests
added S02 and feffterms tests
nose wrapper around test framework basically done
several unit test enhancements

 - use FEFF_TEST_SCF environment variable to control SCF calc in nose
 - notice material/material.skip file to skip data test
 - tests of muffin tin radii, norman radii, individual feff terms from header
better test for completion of feff run
spell-checked readme file
cruftily compiling RDINP against json_fortran

writing modN.inp, global.dat, atoms.dat, geom.dat, s02.dat as json
replacing mod1.inp with pot.json passes unit testing
now using geom.json

cleaned up lotsof compiler warnings
mroe sensible use of json_module.mod and libjsonfortran.a
replace geom.dat and global.dat with json equivalents
cleared out ldos,eels,s02 .dat files

 - commented out lines giving fort.38 and fort.39
 - quieted a lot of compiler warnings of the type coversion and unused variable varieties
made fpf0.json, but commented call to fpf0 out in ATOM/scfdat.f

examination of the code in FF2X/fprime.f shows that the information in fpf0.dat is notused in any case
forgot to destroy a bunch of the json objects used for json i/o

also added _larch=_larch to calls to feffit_report in data unit dests
prepping for big PR
add feff tests with polarization and pol. + ellipticity