Merge pull request #82 from tshepang/diff

docutils is no longer optional
Updated config doc.

Fixed a missing comma.
Fixed code indentation in readme.

Changed command's indentation from 3 spaces to 4 so that it appears as
a code block.
Merge pull request #83 from vivekagr/master

Fixed a couple of mistakes in the docs.
preview server support 404 page. #81
correct overlong underlines
use safer language
fix grammar
add info on installing from a git repo
keeo the virtualenv reference brief, and add a link

Better that than asking people to search the wild web.
Also, capitalize Python.