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Fix typo as reported in issue #704
Opening up getting started guide to show all getting started guides
Merge branch 'master' of github.com:google/WebFundamentals
Merge pull request #705 from jacquerie/issue-704

Fix typo as reported in issue #704
microdata image must be `link` element
Merge pull request #710 from agektmr/microdata

microdata image must be `link` element
Merge pull request #702 from harshadsabne/fix1

Update docs
Merge remote-tracking branch 'upstream/master' into discovery_and_distribution
added sample code for social-sites article
added agektmr
updated discovery and distribution section