users can now query for bus orders

- making a request to ‘riob.us’ with the paramater ‘ordem=<bus order>[,
<bus order>]’ will add these busses to the json we send our response.
At most 10 bus orders can be queried at a time.
- making a request with ‘riob.us/ordem/:busOrder’ will get you a
response with at most 10 bus orders.
- rerouted ‘riob.us/:busLine’ to ‘riob.us/linha/:busLine’.
- lastUpdate isn’t an attribute of ‘data’ or ‘json’ anymore. it is a
4th attribute in the message that comes from child process.