Copyedit builds

Trying again since the first PR seems to have been lost.

Docker-DCO-1.1-Signed-off-by: Fred Lifton fred.lifton@docker.com (github: fredlf)
Ha, funny. But I don't think that example holds water. If MegaSquasher is a feature, would you then refer to what it does as a megasquash? I think not! 

Bottom line for me is that we be consistent and that we actually err on the side of NOT creating a ton of Proper Nouns. So I propose that for now we let this text stand as is, but when I get back from vacation next week, I'll get together with Scott and decide on which things in the Docker language sphere take caps and which don't. I'll write it up in our style guide and I'll do search & replace throughout the docs to make sure all is consistent.