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)
I disagree with you on this.  A [quick google](http://painintheenglish.com/case/4789) tells me that I should use 'that' when I am certain and 'if' when I am uncertain.  In this case, one is certain when 'sure', so 'that' should deffinitely follow 'sure' and not 'if' ;).