Added `houston` and `connection_pool` to the gem spec as dependencies. `houston` is going to be managing the actual sending of push notifications, while `connection_pool` is going to be used to maintain queueing of notification sending by keeping the number of connections to the APNS gateway limited to a set number, with a timeout.
Added `houston` and `connection_pool` to the gem spec as dependencies. `houston` is going to be managing the actual sending of push notifications, while `connection_pool` is going to be used to maintain queueing of notification sending by keeping the number of connections to the APNS gateway limited to a set number, with a timeout.

Papercloud/notify_user,Papercloud/notify_user,Papercloud/notify_user