Added Operation Dig Dig Dig.

I didn't know where to put this in the current repo guys, so I just made
a new folder and a silly name for it. Let me know where to put it or
what to change the folder name to.
Fixed Listings.
Added amusing image.
Linked indiecase's name in list.
Added the Leigh alexander research
Merge pull request #29 from EJEHardenberg/master

Refocusing Readme.