Fixed typo in FITS example
Modified VO text based on referee comments
Merge pull request #24 from pllim/vo-referee-comments

Modified VO text based on referee comments
Merge pull request #23 from fgrollier/master

Some more small fixes
Mention compression and external data support in io.votable.  Addresses reviewer comments 5 and 7.
Merge pull request #26 from mdboom/vo-compression

Mention compression and external data support in io.votable.
Added SIMBAD acknowledgment
Added note about leap seconds
Added SIMBAD URL
Merge remote branch 'upstream/master'
Added note about monochromatic flux conversion, and fix a couple of minor issues.
Addresses two comments from the review: Mentions that astropy.io.fits can read/write gzip files (it can also read from .zip files but I ommitted that since it's not a very commonly used feature to my knowledge).  Also mentions support for HIERARCH cards.  I also added mention of some other interesting features of PyFITS that were previously ommitted--fitsdiff in particular.
Fixed a couple typos, and bolded new/modified text.
Merge pull request #27 from iguananaut/fits-edits

Addresses FITS-related comments from the review