added cucumber dependency
added basic dev gems in gemfile

also fixed problem of other rake files failing to load the bundle
setup basic cucumber with scalpel and boxesctl
extracted common command running to a method
basic imgestion feature now works
gave a better name to admin.feature

now image_ingestion.feature
added temp file cleanup to cucumber
added cucumber to rake file
Added rabbitmq config to travis
forgot to actually start rabbitmq
fixed rakefile so that it only uses cucumber when it's there
fixed bundle:install in travis
explained how to run tests in readme