Add process for PR acceptance, review, rejection

This is an extremely tentative PR.  However, I feel that the suggestions are generally good.

Docker-DCO-1.1-Signed-off-by: Timothy Hobbs <timothyhobbs@seznam.cz> (github: timthelion)
@fredlf Perhaps your first PR can be fixing all the places in the docs where people write "a HTTP" ;)

Hint:  Use

````
git grep "a HTTP"
````

But really, who decided that we use AP style and when?  This gramar nazi'ing is getting really tiresome and is not improving Docker at all.