Protect AttributeError from data element without value #38

https://github.com/cleder/fastkml/issues/38

handle coordinates tuples which contain spaces

Coordinates can be any number of tuples separated by a
space (potentially any number of whitespace characters).
Values in tuples should be separated by commas with no
spaces. Clean up badly formatted tuples by stripping
space following commas.

See reference: https://developers.google.com/kml/documentation/kmlreference#coordinates

@IanLee1521 the pypi deployment does not seem to like my username http://docs.travis-ci.com/user/deployment/pypi/

Honor normal and highlight arguments to StyleMap init method

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Use pkg_resources to get the version from setup.py