Imports
- github.com/pkg/errors
- github.com/GlidingTracks/gt-backend
- google.golang.org/api/iterator
- github.com/gorilla/mux
- github.com/rs/cors
- cloud.google.com/go/firestore
- github.com/GlidingTracks/gt-backend/constant
- github.com/GlidingTracks/gt-backend/models
- firebase.google.com/go