Add the reference name used for joining to the road name when using a…

…lternate refs.

Update Readme

Add release notes to changelog.

Merge pull request #56 from adamfranco/test-compatability

Skip nodes with invalid location rather than failing.

Add changelog to Readme.

Release tag for Curvature version 2.0.

Add KML output notes.

Add documentation on GZipping msgpack data.

Fixes #29.

Merge pull request #17 from sgallese/patch-1

Use pbf file endings in readme