Added requirements on zlib and Python to READEME file.
Added requirements on zlib and Python to READEME file.

finnhaedicke/metaSMT,agra-uni-bremen/metaSMT,agra-uni-bremen/metaSMT,nbruns1/metaSMT,hoangmle/metaSMT,hoangmle/metaSMT,hoangmle/metaSMT,finnhaedicke/metaSMT,agra-uni-bremen/metaSMT,finnhaedicke/metaSMT,nbruns1/metaSMT,nbruns1/metaSMT