node-osrm.cpp questions/comments (constructor + route args)

[lbud]

A few questions/comments that came up while working on #87:

@TheMarex — if a new OSRM object is initialized with >= 2 variables (this case), I see the second arg is the maximum number of locations in the distance table — what would the other args in this case be? (I think understanding these params would also help me understand why I'm hitting "Start canary of block corrupted." — hence the skip in this test).

Also, there's a lack of documentation around osrm.route({ parameters — not sure if this belongs here or in osrm-backend, but a lot of these are unclear.