Interface to the OSRM API

[Robinlovelace]

And decode the results.

E.g.

http://router.project-osrm.org/viaroute?loc=52.503033,13.420526&loc=52.516582,13.429290&instructions=true

[richardellison]

I have made a start on this by adding a function to decode the encoded polylines used for the route geometries returned by OSRM (see #22). I'm thinking the function to decode OSRM results should return a SpatialLinesDataFrame with the route geometries and other data?

[Robinlovelace]

Great work - we're most of the way there. Will look at creating route_osrm next weekend, unless you get there 1st.

[Robinlovelace]

Functionality added.