remove redundant import
add with stdenv.lib; statement for meta attributes
use original name for the package attribute

Since Nix supports dashes in attribute names, it's best
if the attribute name matches the package to avoid any
confusion.
Use only tarballs and zip files for source (avoid eggs any wheels)
remove dots at the end of description
use pythonPackages attributeset namespace for build inputs
Merge pull request #1 from iElectric/upstream_improvements

Some smaller improvements