begin rails 4

enough for bundle install to work with 4.1.5

Change-Id: I277df9e4315fa250b6028139113c74721148e2f0
Reviewed-on: https://gerrit.instructure.com/39656
Reviewed-by: Brian Palmer <brianp@instructure.com>
Tested-by: Jenkins <jenkins@instructure.com>
Product-Review: Cody Cutrer <cody@instructure.com>
QA-Review: Cody Cutrer <cody@instructure.com>