Bump min rails dependency to 4.0.0
Bump min rails dependency to 4.0.0

lambcr/rocket_job_mission_control,rocketjob/rocketjob_mission_control,rocketjob/rocketjob_mission_control,lambcr/rocket_job_mission_control,lambcr/rocket_job_mission_control,rocketjob/rocketjob_mission_control