Move and rename directories.
Add README.
Update README.md
Merge branch 'development'
Merge commit 'a6f0bc9c8f89fec87e6dd7d257aa7de15c979ca7' into drupal7
Return absolute url for preview.
Remove sdk to fix conflicts.
Add 'sdk/' from commit '3f9b62bd419290392d1f6a6922bb8f11cdd1471f'

git-subtree-dir: sdk
git-subtree-mainline: 56e70b0cfd4e01ffc775413d394323cbd39e2790
git-subtree-split: 3f9b62bd419290392d1f6a6922bb8f11cdd1471f