For discussion: Add page about our commitments

1. I wasn't sure what to call it. "Our commitments"? Or is it fine as is?
2. I think it's fair to say we'll respond to email as soon as we can during working hours? (Just to stress here, I really want us to make sure we do not respond out of working hours as I don't want that to become an expectation).
3. Any other thoughts?
This page includes a lot of information that would be relevant to contributors. What if we named it 'Contributing'?