Addition of an extra reference link

Addition of an extra reference link
minor edit of spelling mistake

minor edit of spelling mistake
Optimized the fetch from the post build script
Merge branch 'v3.0'
Merge pull request #1036 from cfarquharson/master

Design Guide: minor edit of spelling mistake and added a reference link
Travis build 3517702 pushed to gh-pages
Travis build 3524418 pushed to gh-pages
Travis build 3532418 pushed to gh-pages
Travis build 3534427 pushed to gh-pages
Travis build 3537918 pushed to gh-pages
Travis build 3543300 pushed to gh-pages
Travis build 3543321 pushed to gh-pages
Travis build 3556642 pushed to gh-pages
Travis build 3557427 pushed to gh-pages
Travis build 3593884 pushed to gh-pages
Travis build 3595883 pushed to gh-pages
Travis build 3605417 pushed to gh-pages
Travis build 3612810 pushed to gh-pages
Travis build 3619086 pushed to gh-pages
Travis build 3619320 pushed to gh-pages