Add maxTransfers to configuration

[gerbsen]

Short summary:
The new option is maxTransfers in the transit travel options. If the option is not present, the amount of transfers is unlimited. The option is ignored for other travel modes.

Valid values: [0..127]

Example:

...
  "sources": [
    {
      "lng": -73.976636,
      "id": "id1",
      "lat": 40.608155,
      "tm": {
        "transit": {
          "recommendations": 0,
          "frame": {
            "date": 20161020,
            "duration": 18000,
            "time": 55852
          },
          "maxTransfers": 2
        }
      }
    }
...

[abenrob]

@gerbsen this is for all requests (polygon, route and time)?

[gerbsen]

Oui.