Added threading code for rake tasks, creation steps not currently working
Added rake tasks for create/clean
Updated rake tasks
WIP: NEO4j rake tasks
Update README.md
Added Neography initializerand therubyracer gem
Merge branch 'feature_sf_node_data_seed' of https://github.com/jhulley/streetwise into feature_sf_node_data_seed
Removed highway model/migration/rake tasks
Started node graph rake tasks
Added graph model for data creation and extraction methods
  Methods support graph rake tasks
  WIP: intersection relationship creation tasks
Preliminary shortest path calcs working
  TODO: write algorithm for shortest path w/ weight
  TODO: set weight of each relationship
  TODO: remove double relationships?
Added weighting to graph safe_path method
Added valid request check in directions controller
Merge branch 'master' into graph_direction_request

Conflicts:
	Gemfile
	Gemfile.lock
	app/models/direction.rb
Added safe_route generator for weighted graph
  Output is encoded polyline sent to client
  TODO: refactor client side to accept and show polyline
Path and endpoints from graph search display on map
  TODO: display loading information
  TODO: format error messages
  TODO: optimize "near node" lookup, currently very long
  TODO: remove previous bounds when new directions comes in
Merge pull request #12 from jhulley/graph_direction_request

Graph direction request