Server returns not a number

I haven't gone into it too far, but regex from #5 seems valid.
Nevertheless:
```
uberfare estimate origin=-36.841934,-73.079622 dest=-36.830313,-73.042668
Usage: uberfare estimate [OPTIONS] <origin> <dest>

Error: Invalid value for "<origin>": Coordinates must be in the format: 123.23,42.1 <LATITUDE,LONGITUDE>
```