new configs.
added -lboost_filesystem -lboost_system to pbfgraphbuilder
add intial location and path location objects for correlating input locations to the graph network as input to the path generation algorithm. also add validity checks to latlng object. add a few minor tests, need more of these
Merge remote-tracking branch 'origin/kk_loki' into dwn
updated to use class variables:  node and way scripts and functions for lua. Also added missing accessor funcitons.
oops forgot to add pathlocation sources
Merge remote-tracking branch 'origin/kk_loki' into dwn
added logic to use boost options.
Merge pull request #47 from mapzen/dwn

Framework for TripPathBuilder
add location to path location initialization
added libboost-system-dev and libboost-filesystem-dev
reverted.  We are already using libboost-all-dev.
added m4's for boost_filesystem and boost_system.
attempt to get proper boost version in travis
Merge pull request #48 from mapzen/graph_configs

Graph configs
Merge remote-tracking branch 'origin/master' into dwn
Merge remote-tracking branch 'origin/kk_loki' into dwn
Fix level (was passing in tilesize!).