bug fixing
Merge pull request #1 from tlpinney/osm

Fixed minor typo in command
started with mappings
Reworked commands. replaced import and update by import (from file) and download (from url and update)
added --add modifier to import command and op
Travis yaml and status message image.
Kickoff new travis build
Started added mapping functionality mapping
Added json format for mapping
more mapping, and added shp export command
Changed structure of data in "way" tree. Now it only stores linestrings

Added missing dependency to pom.

Added export-pg command
Minor corrections and better user interaction

Added SL export
Merge branch 'osm' of https://github.com/volaya/GeoGit