Add doc for deployment to Bluemix (IBM's PaaS option)
Fix PaaS casing
Merge branch 'master' into bluemix-doc
[ci skip] Add doc metadata comment to .md file
Restructure a bit; quickstart and details.
Add bluemix deploy doc to How-To section
Merge pull request #3365 from circleci/bluemix-doc

Bluemix doc
Merge commit '72c592889c41e6bfc4dbaacf01726c4b521c2d1c'