added robust coordinate matrix to accommodate SLDF with mult-segment within a line
update networkplanner code base remove unused code
fix bug in Chris' work and refactord another version
Merge branch 'master' of github.com:SEL-Columbia/networkplanner.R into coor_mtx
comment out adj mtx function for now
Merge pull request #16 from SEL-Columbia/coor_mtx

Coordinate mtx