new configs.
added -lboost_filesystem -lboost_system to pbfgraphbuilder
updated to use class variables:  node and way scripts and functions for lua. Also added missing accessor funcitons.
added logic to use boost options.
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 branch 'master' of https://github.com/mapzen/valhalla into gdg