Check if cocos sharp aplies to be on the list

[Sandl Okino]

hello,

On the engines section, check if cocos sharp
https://github.com/mono/CocosSharp

the monogame implementation of cocos2d can be on that list :)

Is awesome (but some older) and works fine for 2d projects :3

[Ellison]

Please open a PR if you feel like the link needs to be on the list. thanks!