I'm currently working with Github API to make an iOS github client app. I'd like to implement the feature of creating issues with images. My question is how to upload an image for issue comments via API. We're able to upload the image by drag-and-drop via browser in github.com like image below:

I'd like to use this https://cloud.githubusercontent.com/assets/~~~.PNG. Any way to upload to https://cloud.githubusercontent.com via API or something?