Enhance user guide with architecture and traffic flow#21

Damans227 wants to merge 2 commits intoshapeblue:mainshapeblue/hackerbook:mainfrom

Damans227:Damans227-user-1/add-architecure-sectionDamans227/hackerbook:Damans227-user-1/add-architecure-sectionCopy head branch name to clipboard