prepare for deployment

main.go

@@ -5,11 +5,12 @@ import (
 	"github.com/gorilla/mux"
 	"log"
 	"net/http"
+	"os"
 )
 
 func main() {
 	r := mux.NewRouter()
-	port := "5000"//os.Getenv("PORT")
+	port := os.Getenv("PORT")
 	c := r.PathPrefix("/conservation/v1").Methods("GET").Subrouter()
 
 	// two handlerpaths makes sure that the caller does not HAVE to specify limit