Elixir solution to the Code Camp 2017 MX challenge.
See the challenge.
$ mix deps.get
...
$ mix run --no-halt
In another console
$ curl http://localhost:4001/route/Eugenia/Refinería
["Eugenia","División del Norte","Zapata","Hospital 20 de Noviembre","Insurgentes Sur","Mixcoac","San Antonio","San Pedro de los Pinos","Tacubaya","Constituyentes","Auditorio","Polanco","Tacuba","Refinería"]