FIXES #22 Adds support for verbose output. Implemented verbose construction decorator class.
draft implementation of #12
removed edgemap table creation call
revised docstrings for topojson constructor
refactored non-public methods in constructors with single underscore
converted some constructor internals to staticmethods
convert to simplejson
Update Travis config to build test PostGIS DB.
Added topojson tests
Updated README and docs
bump to version 0.3.0
Merge pull request #23 from mattmakesmaps/development

Version 0.3.0 merge into master