Added two new opening and closing paragraphs to the 'community' section (which may end up needed a bit of a paring down once we add references and footnotes)
Standardize spacing after periods and spelling of 'Astropy Project'
A few spelling corrections
Added my name and affiliation, fixed up the running headers, and updated the capitalization of sections and titles (they seem to prefer title caps)
Fix minor typo 'representing' -> 'represented'
Added some citations and tightened a little of the language up
Had to tighten up the lanaguage more and kill quite a bit of the community section in order to fit in the references.  In particular, removed discussion of the coordinating committee and boasting about metrics.  For the sake of trimming, tried to remove any subjective statements and stick to the facts.