Added unit test for EqualTo op
Added ExitSignBuilder
Refactored EdgeInfoBuilder
fixed dir.
updated tags.
set dir edge attributes.
fixed dir.
Merge pull request #3 from valhalla/dwn

Add some new fields and use bit fields for some attributes
Merge pull request #2 from valhalla/gdg

Added ExitSignBuilder and refactored EdgeInfoBuilder
Merge pull request #4 from valhalla/updates_dir_edge_gk

Updates dir edge gk
Separate OSMNode into its own class. Use union/bitfield struct to
save some memory.
Remove spaces from conditionals