CLONE - CLONE - Tag Docs

This should wait until all other repos are tagged.

Steps:
1. Look through all open JIRA bugs targeted at the current version and either fix or postpone them.
2. Update snapshot of docs using the release branch, then cherry-pick that into master.
3. Ensure docs are up-to-date by looking through the changelogs on all platforms (or at least cordova-js).
4. Tag (via coho)