Use dict.get() consistently and clean up minor spacing issues.
Merge pull request #82 from iandanforth/patch-3

Use dict.get() consistently and clean up minor spacing issues.
modular: numpy - remove source dirs

for linux and MacOS
modular: pip as a dependency for python modules
modular: NUMPY make required dependency

fail in not found, add path with numpy includes to gcc build
modular: update Readme, list dependencies and platforms
modular: NUMPY fix substitution in Includes

just shell trickery :P