drivethrough now supports pushing back images
renamed drawing push spec to api integration
get slice now returns id, image and queue as json
fixed bug where request to_json didn't work
added feature specs for the entire drawing loop

Turns out there were a few bugs in everything. These are now fixed and things work like a charm.
removed support for 1.9 in travis and added 2.1.4

Since we're in docker we don't care for 1.9. I added 2.1.4 because that's what is running on my machine right now.
bumped drivethrough to 1.0.0
bumped forklift to 1.1.0
bumped gluegun to 1.1.0
bumped scalpel to 1.1.0
bumped commons to 1.0.0
updated dependencies to match new commons version