[#78547098] initial addition of hirefire for Heroku dyno autoscaling
[#78547098] not requiring hirefire-resource
[#78547098] using queue size not total count
[#78547098] ENV switch on requiring HireFire
[#78547098] fix spec only failing on Travis?
[#78547098] gem merge confilcts resolved
[#78547098] fix flakey spec
Merge pull request #29 from HouseTrip/platform/implement-autoscaling-on-routemaster-78547098

Platform: Implement Autoscaling on Routemaster [#78547098]