adding ruby examples for autoscale; tweaked autoscale docs
Updated ruby example for create_scaling_group

I have converted my note to a comment to support execution of example code.
DNS curl samples
Merge branch 'ruby_autoscale' of github.com:krames/developer.rackspace.com into krames-ruby_autoscale
:lipstick: camelCase placeholder names.
doggone single quotes.
For consistency's sake all headers are double quoted
Merge pull request #159 from rdodev/curl-dns

DNS curl samples
Adding info to curl commands and code samples
Formatting
Touch up inconsistencies in Block Storage examples.
Update CONTRIBUTING.rst
Making top line title an H
Merge branch 'master' of github.com:rackerlabs/developer.rackspace.com
Consistency pass for compute examples.
Consistency pass for Databases samples.
Error handling is out of scope.
Fixing name of staging load balancer.
Merge pull request #164 from ycombinator/staging-lb-name-fix

Fixing name of staging load balancer.
Update CONTRIBUTING.rst

For sanity's sake.