Imports github.com/clintjedwards/snark/config github.com/clintjedwards/snark/helpers/httputil github.com/go-ozzo/ozzo-validation github.com/go-ozzo/ozzo-validation/is github.com/gorilla/handlers github.com/gorilla/mux github.com/nlopes/slack Standard library imports encoding/json errors fmt log math/rand net/http os time