now should work for multiple python versions
aeson >= 0.6.1
add ihaskell-HaTeX

doesn't compile here without changing HaTeX to allow attoparsec-0.12,
so wait until hatex-3.9.2.0?
fix broken link in README
make it work with python3
adding --ipython flag which you point to an executable
update README with correct sandbox build instructions & Mac OS X considerations