Migrate files out of img/

[victorlin]

Disbanding the img/ directory per discussion in #132. References in the wiki have already been updated.

• img/dia/ -> serratus.io/src/assets/dia/
• img/logo/ -> serratus.io/src/assets/logo/
  • img/logo/splash_play.png -> serratus/wiki/img/splash_play.png
• img/markdown/: only one file in here. Created new folder notebook/200516/ that contains files from that experiment, consistent with current structure in notebook/.
• img/covref.JPG -> serratus/wiki/img/splash_play.png
• img/serratus_overview.png -> serratus/wiki/img/splash_play.png
• img/serratus_pipeline.png -> serratus/wiki/img/splash_play.png

The only downside to this is images referenced in README.md (splash_play.png , serratus_overview.png) will be stored separately from the document. The options are:

1. Keep just the two files in img/
2. Move them to somewhere else in the repo (serratus/doc/img/?)
3. Move them to somewhere in serratus.io/src/assets/
4. Move them to wiki

I chose the last option, since it's consistent with the other changes and any new breaking changes should be obvious with README.md displayed on the main the repo page.

[ababaian]

For the two remaining images let's do the wiki. I believe we can still use relative paths within github to access the wiki

[ababaian]

@victorlin will you have a chance to finish this soon?

[victorlin]

The files are moved to the wiki already, the only thing that has to be done now is change to relative paths in the README (I have them as absolute paths right now). We can merge this PR in now and I’ll make the change with other README changes in a separate PR.