doc: Moved recommendations sections to Intro.

Signed-off-by: John Wilkins <john.wilkins@inktank.com>
doc: Changed title, and removed recommendations sections.

Signed-off-by: John Wilkins <john.wilkins@inktank.com>
doc: Removed Get Involved from Quick Start.

Signed-off-by: John Wilkins <john.wilkins@inktank.com>
doc: Added Recommendations and Get Involved to Intro.

Signed-off-by: John Wilkins <john.wilkins@inktank.com>
doc: Updated graphic to use same name as command line examples.

Signed-off-by: John Wilkins <john.wilkins@inktank.com>
doc: Updated graphic. Removed bullet points. Cleaned up RPM/YUM example.

Signed-off-by: John Wilkins <john.wilkins@inktank.com>