subsection label corrected
comments and some little fixings
an extra comment on a word
Merge pull request #82 from dpshelio/davidview

Passing ball to @Cadair
Cadair passes the ball
Merge pull request #83 from Cadair/master

Cadair passes the ball
Merge branch 'master' of https://github.com/wafels/sunpy-0.4-paper
fixed lightcurve conflict
added in Keith with affiliation #4 since it was missing from the previous list
small changes, and comments to Future section
dropped the 'Development workflow section, retaining the salient points about the SunPy community and dropping the git/github description.
comments on database section, small edits
removed the first image and listing, and compressed the description of the download_png portion
moved HELIO overplotting on maps to Future section
added a comment right at the end
Merge pull request #85 from wafels/master

Two biggish changes: passing the ball
Edits to intro
Edits to section 2, data types
Edits to section 3, retrieval
Edits to the rest