You can use markdown code to embed images in your feature files. These images will then be displayed when viewing the feature file in TFS/VSTS.
When embedding images, the path to the image can be specified as a relative or absolute path. You can also embed images stored externally, such as on a website. Paths are relative to the location of the feature file.
Embedding an image in the same directory as the feature file
Embedding an image in a sub-directory
Embedding an image with an absolute reference
Embedding an image relative to the parent directory
Embedding an external image