[#218] Enabling gzip compression.
Adds inviting introductory text to the docs landing page

- small corrections in commas
[#207] Enabling PHP code highlighting.
[#261] Disable password auth for SSH.
[#142] Adding in missing "src".
[#261] Disable password auth for SSH.
[#261] Disable password auth for SSH.
Merge branch 'sshd-disable-password-auth' of github.com:ycombinator/developer.rackspace.com into sshd-disable-password-auth
Merge pull request #267 from ycombinator/motd-fix

[#142] Adding in missing "src".
Merge pull request #262 from ycombinator/nginx-gzip

[#218] Enabling gzip compression.
Merge pull request #266 from ycombinator/sshd-disable-password-auth

[#261] Disable password auth for SSH.
Merge pull request #265 from ycombinator/php-highlighting

[#207] Enabling PHP code highlighting.
Merge pull request #269 from rdodev/master

Maybe there's a unicode/python issue. sigh.
Merge pull request #263 from annegentle/master

Adds inviting introductory text to the docs landing page
Toss nav for Cloud(Networks|Identity|Backup|Sites)

Fixes #280
Merge pull request #281 from rgbkrk/nav_cleanup

Toss nav for Cloud(Networks|Identity|Backup|Sites)