Merge pull request #10 from valhalla/dwn

Add access constants
added Bike Network constants
Merge pull request #11 from valhalla/Bike_Network_constants

added Bike Network constants
add updates to tilehierarchy and graphid so as to allow loki and graphreader to make use of them
finish up the graph tile from ll method for loki
add some more tests around importance parsing
gracefully handle typos by throwing an exception with a message
Merge pull request #12 from valhalla/kk_loki

graphreader hooks for loki to get tile from ll
GetStreetNameOffset update
Merge branch 'master' of https://github.com/valhalla/baldr into gdg
Changed to use [] op
Merge pull request #13 from valhalla/gdg

 GetStreetNameOffset update
Added ToOstream for debugging
update interface to edgeinfo
refactor path location a bit to be more useful to loki. make graphreader easier to use if you already have a pt and dont need the hierarchy.  update graphtile to use size_t in place of int and to use c++ style casts instead of c style casts, also to use array operators instead of pointer arithmetic as its more obvious
Merge remote-tracking branch 'origin/master' into kk_loki
Merge branch 'master' of https://github.com/valhalla/baldr into gdg
Merge pull request #14 from valhalla/kk_loki

updates to pathlocation and graphtile for loki
Merge branch 'master' of https://github.com/valhalla/baldr into gdg
add additional m4s for posterity