Use double quotes to avoid > being interpreted as a shell redirect
Update installation instructions for Debian 7 (Wheezy)
Add footnote explaining that SExtractor requires ATLAS, not LAPACK
Enable Bash syntax highlighting in the code blocks
IRAF and PyRAF are no longer "tedious and painful" to install
Fix grammar error — wrong preposition
An IRAF package would not simplify the installation *that* much
Mention that Astrometry.net may also be packaged soon
Not everyone in the GNU/Linux world uses Debian (unfortunately!)
Use a more idiomatic preposition
Update README for Debian 7 (Wheezy)

This merges branch 'update-README'