Added instructions for adding a new language/SDK to the site.
Updating references to performance flavors in full code examples.
Updating references to performance flavors in Ansible playbooks.
Merge pull request #925 from ycombinator/replace-perf-flavor

Replace performance flavors
Improvement needed for instructions related to adding a language and/or SDK to the site.
More small typo fixes.
Merge pull request #907 from DonSchenck/add-new-language

Added instructions for adding a new language/SDK to the site.
Pin the Ruby version to a known good state.
Blog post docker, kubernetes, gophercloud
Merge remote-tracking branch 'upstream/master' into smashwilson-pin-ruby-version
Small delta for merge?