Update readme.rst

Add warning that conda binary on windows is finicky
update readme with new conda binaries

moved from my personal repo to the "pyne" org
update conda binaries info
Merge branch 'master' into staging

Conflicts:
	readme.rst
Add the ostringstream operator
Trivial addition of write_mcnp()
Add more to mcnp
Add temporary c++ testing facility
Debug nucname::mcnp problem
Successfull basic json manipulation
mcnp() rough draft
frac_type_id; fails nosetest
Go back to string arg for mcnp
updated the cython wrappers
modified json metadata in mcnp
modified the cython to allow string return
modified tests, still needs some changes
nosetests test_materials passes
All nosetests pass