[DAEMON-55] appcd: Add Retire.js to the 'gulp check' task
|Fix Version/s||Appc Daemon 1.0.0|
gulp checkcurrently only checks NSP for security issues. It is also desired to use Retire.js (https://retirejs.github.io/retire.js/). We need to add Retire.js to the
gulp checktask and update the JSON results. It is preferred to use Retire.js programmatically instead of subprocessing it, though I'm not sure if that's feasible. Also note that Retire.js and NSP overlap and it would be ideal to unify the results and eliminate duplicates.