doc: add 'Getting Started' section
doc: add 'Getting Started' section

ryancox/embd,dboyliao/embd,pctj101/embd,gale320/embd,gavincabbage/embd,kidoman/embd,gale320/embd,gavincabbage/embd,ryancox/embd,pctj101/embd,kidoman/embd,dboyliao/embd