Added require 'bundler' for Bundler 1.9
Added require 'bundler' for Bundler 1.9

See https://github.com/bundler/bundler/issues/3492 for more info.

ttasanen/oga,altmetric/oga,jeffreybaird/oga,ttasanen/oga,ttasanen/oga,altmetric/oga,ttasanen/oga,jeffreybaird/oga,altmetric/oga,jeffreybaird/oga,YorickPeterse/oga,altmetric/oga,ttasanen/oga,jeffreybaird/oga,dfockler/oga,dfockler/oga,jeffreybaird/oga,YorickPeterse/oga,YorickPeterse/oga,YorickPeterse/oga,altmetric/oga,YorickPeterse/oga,dfockler/oga,dfockler/oga,dfockler/oga