Added summarizer report example to img/ for wiki

[ababaian]

I've added a serratus/wiki/img folder to that repository so that all the documentation images can be in one place. This actually would be a good point to migrate the serratus/img/ to serratus/wiki/img as those all technically fall under documentation/wiki and not part of the core code-base.

For now we can leave the images in the README and CONTRIBUTING in serratus/img but should eventually redirect those to the the wiki folder as well. This means when people download the repo.zip, they don't download a bunch of images.

@victorlin if you get a chance let me know what you think of this and we can decide.

[victorlin]

Hey just saw this, that's a brilliant idea. I haven't thought of hosting images on the wiki but I agree, let's move what we can out of serratus/img.

• img/dia/, img/logo/: these aren't so useful for "documentation", but it also isn't necessary for keeping in the base repo. We could move them to the website repo (serratus.io/src/assets/) or keep them here for now.
• img/markdown/: images referenced by notebooks should probably be put alongside counterparts somewhere in the serratus/notebook directory. serratus/notebook/img/?
• covref.JPG, serratus_overview.png, serratus_pipeline.png: these can be moved to the wiki.