Add AccuWeather API to Weather

A free weather and forecast API for development and small-scale projects.

README.md

@@ -1110,6 +1110,7 @@ API | Description | Auth | HTTPS | CORS |
 API | Description | Auth | HTTPS | CORS |
 |---|---|---|---|---|
 | [7Timer!](http://www.7timer.info/doc.php?lang=en) | Weather, especially for Astroweather | No | No | Unknown |
+| [AccuWeather](https://developer.accuweather.com/apis) | Weather and forecast data | `apiKey` | No | Unknown |
 | [APIXU](https://www.apixu.com/doc/request.aspx) | Weather | `apiKey` | Yes | Unknown |
 | [ColorfulClouds](https://open.caiyunapp.com/ColorfulClouds_Weather_API) | Weather | `apiKey` | Yes | Yes |
 | [Foreca](https://developer.foreca.com) | Weather | `OAuth` | Yes | Unknown |