Adding method to serialize network to GeoJSON.
Correcting pom spacing.
Merge pull request #154 from mnjuhn/dev

Adding method to serialize network to GeoJSON.
Merge branch 'dev' of github.com:calpath/model-objects into dev
Merge pull request #153 from javierhe/dev

Add RouteSet model object and unit tests
Add RouteSet methods to Scenario object
Merge branch 'dev' of github.com:calpath/model-objects into dev