First pages commit
index.htm: clean up trailing whitespace
index.htm: edit `More Details` section

Fixed grammar, phrasing, and source text formatting (for readability and
easy editing).
Change contact email to public mailinglist

To grow a community, we *must* avoid invisible and closed discussions
as much as possible. If people cannot see activity and enthusiasm,
they will not want to contribute themselves, thus further limiting the
activity around the project.

The link now takes visitors to the Google Group where they can
subcribe or post new questions.
Use pre elements for code

This allows us to group the commands to be entered one after another.
This avoids leaving a gap between the lines -- the p elements had an
extra bottom margin that caused the white background to bleed through.

The lines are still wrapped when the window is too narrow to make them
fit -- as they did before in the p element.
css: add border and padding to code examples

Now that we have grouped related commands together in a pre element,
we can give them a nice border and some padding to avoid a too dense
look.
download.htm: clean up trailing whitespace
getstarted.htm: clean up whitespace
principles.html: clean up whitespace
zebra.htm: clean up whitespace
getstarted.htm: cleanup, rephrase, reformat
principles.htm: cleanup, rephrase, reformat
zebra.htm: cleanup, rephrase, reformat
index.htm: reformat intro text, punctuation
Merge pull request #3 from larsbutler/cleanup-rephrase-reformat

Cleanup, rephrase, and reformat
Merge pull request #2 from mgeisler/code-color

Improve code blocks
Merge pull request #1 from mgeisler/contact-email

Change contact email to public mailinglist
merged changes from lars and martin
removed registered from OpenStack per recommendation from Van, also cleaned up a formatting issue
removed registered trademark from OpenStack per recommendation from Van.