ignore dreaded Desktop Services attribute files
Merge pull request #50 from pizthewiz/ignore-turds

Ignore Desktop Services attribute files
++specta for setup fix
++expecta for memory barrier
Remove talk of Core Data concurrency

It's too contentious, and not really relevant to the larger point being made.
Better phrasing for final paragraph
Merge pull request #54 from github/less-core-data-talk

Remove talk of Core Data concurrency from the README