coderhs/ruby_open_weather_map — pull request #10 by penguinco (2014-07-10 09:23:16+00:00)
Title: Add units options

openweathermap accept `units` options like this

```
http://api.openweathermap.org/data/2.5/weather?q=Tokyo,jp&units=metric
```

This option switch temperature coding. Very useful for me.
documentation: http://bugs.openweathermap.org/projects/api/wiki/Api_2_5_weather#4-Other-parameters