Weather: Add Regional Atmospheric Soaring Prediction (RASP) links

[HenrikBengtsson]

• Williams RASP (Hull, Elk, St. John): http://www.huckbone.com/wscrasp.html

• Sierra RASP (Slide, McClellan, Wolf, Sweetwater, Cooper, McGee, Pitute, Gunter, Flynn’s, Mazourka, Black Eagle, Walt’s Point, Cerro Gordo): http://sierra.raspmaps.com/index.php

h/t @ktub

[HenrikBengtsson]

For the record: someone created a Docker container for running these predictions, cf. https://gitlab.com/DavidRasp/blipmaps.nl

[HenrikBengtsson]

Another link for the Sierras:

https://rasp.nfshost.com/sierra-nevada/