added galaxy mass tutorial on quantities
remove output. fix html
remove output
Merge branch 'master' of github.com:astropy/astropy-tutorials
added css from astropy site and linked
inject a header into each tutorial
add css and image to repo
fix nav bar, remove h1
point to www instead
link tutorials
added nbviewer css and nav bar to rendered notebooks
moved css, images into html
remove extra copy statemtnets
check for failure running python
ask to preview html
extra newline
capitalize N's, make warning louder
update link pointer
Merge pull request #40 from adrn/style-index

Stylize index.html and inject Astropy tutorials header
unpublish lias tutorials