Update jQuery version to 1.11.1, closes #162
Updated to latest jquery-ujs.
Update jquery-rails version.
Add the jquery-ujs version to the VERSIONS.md matrix.

For now on we can reference the bundled jquery-ujs script through
a version number and not just a SHA1.
Release 3.1.1
updated readme with jQuery version 1.11.1
Merge pull request #163 from dy-dx/update-readme

updated readme with jQuery version 1.11.1
Update Changelog.md to correct release year
Merge pull request #164 from mattmenefee/patch-1

Update Changelog.md to correct release year
Update to latest jquery-ujs.
master is now 4.x, targeting Rails 4.2+
Remove support for Rails 3/Rails 3.1 apps.