Force older Rails (4.2) in root Gemfile
Force older Rails (4.2) in root Gemfile

Allows `bundle exec appraisal` to be executed locally on 1.9.3, 2.0.

Signed-off-by: Alex Coles <60c6d277a8bd81de7fdde19201bf9c58a3df08f4@alexbcoles.com>

apotonick/roar-rails