Merges node-osrm into repository

Build with

    cmake .. -DCMAKE_BUILD_TYPE=Release -DENABLE_NODE_BINDINGS=On -DENABLE_MASON=On

example/example.js

@@ -0,0 +1,32 @@
+process.env.UV_THREADPOOL_SIZE = Math.ceil(require('os').cpus().length * 1.5);
+
+var express = require('express');
+var OSRM = require('..');
+var path = require('path');
+
+var app = express();
+var osrm = new OSRM(path.join(__dirname,"../test/data/berlin_CH.osrm"));
+
+// Accepts a query like:
+// http://localhost:8888?start=13.414307,52.521835&end=13.402290,52.523728
+app.get('/', function(req, res) {
+    if (!req.query.start || !req.query.end) {
+        return res.json({"error":"invalid start and end query"});
+    }
+    var coordinates = [];
+    var start = req.query.start.split(',');
+    coordinates.push([+start[0],+start[1]]);
+    var end = req.query.end.split(',');
+    coordinates.push([+end[0],+end[1]]);
+    var query = {
+        coordinates: coordinates,
+        alternateRoute: req.query.alternatives !== 'false'
+    };
+    osrm.route(query, function(err, result) {
+        if (err) return res.json({"error":err.message});
+        return res.json(result);
+    });
+});
+
+console.log('Listening on port: ' + 8888);
+app.listen(8888);