Added (actully) requrirements file.
Added (actully) requrirements file.

pydata/numexpr,robbmcleod/numexpr,pombredanne/numexpr,pombredanne/numexpr,andreabedini/numexpr,pombredanne/numexpr,pydata/numexpr,andreabedini/numexpr,andreabedini/numexpr,pydata/numexpr,robbmcleod/numexpr,robbmcleod/numexpr