fix incorrect sqlDB examples

[gregl83]

• ensure all sql db references use: sqlDB
• remove trailing whitespace from parameter values to avoid confusion
• update requirements table formatting for consistency
• replace tab with single space in footnote for consistent markdown list

[msftclas]

All CLA requirements met.

[arvindshmicrosoft]

@gregl83 thanks much for your contributions and sincere apologies for the delays on this - this repo was not maintained actively and we are trying to keep it in reasonable shape for now. I unblocked the issue related to the Travis CI failing. Could you please fetch current upstream master, and either merge or rebase your work on top of current upstream master so that you get the latest .travis.yml in your branch? Once that's done if you can push up the new commit that would be really appreciated.