Additional algorithm

[andrewcz]

Hi all,
Love the package! Looks super cool 😊!
Was wondering if the below algorithms could be added-

https://gist.github.com/vdutor/0c720e1399e6bf7eae5c2bf32cdfb47d

https://github.com/ZilongTan/sigp

Many thanks,
Best,
Andrew

[partev]

@andrewcz this is a repository for the website. you probably should move this issue to https://github.com/cornellius-gp/gpytorch/issues