Update image links to point at github. Add meaningful alt text.

Jamie Nicolson committed Mar 31, 2017

update URLs

Jamie Nicolson committed May 13, 2015

add images for wiki

djnicolson committed May 12, 2015

../finishGoogleCodeGitHubWikiMigration: Moved pages from gmail-oauth2-tools wiki branch to gmail-oauth2-tools.wiki master branch.

djnicolson committed May 12, 2015