Merge pull request cmfcmf#25 from emmanuelroecker/weatherforecast-wit… …h-sunrise-and-sunset Add sunrise and sunset in WeatherForecast Class

Changed degree character to html representation, closes cmfcmf#15. Th… …anks @CheckeredMichael!

Refactored and fixed cache, closes cmfcmf#9, thanks @goranata for rep… …orting!

Update README.md 

Merge pull request cmfcmf#7 from cmfcmf/refactor [BC breaks] Refactoring, added weather history, removed autoloader.

Now with forecast functionality! 

Added example call. 

Uploading first version