Allow caller to specify clojure.tools.nrepl.server/start-server options

[novakboskov]

• deletes absent (and not needed) requires.
• changes function comment. Things around environment and thus :nrepl-port are not included in this piece of code.
• adds possibility to provide options to clojure.tools.nrepl.server/start-server. e.g. Those who use Emacs & CIDER need this possibility to fill nrepl server with middleware which allows full functionality of IDE when it must be connected to a running, embedded server. This changes allow user to do things like:

(defn cider&cljr-nrepl-handler []
      (apply nrepl/default-handler (cons #'refactor-nrepl.middleware/wrap-refactor
                                          (map resolve cider-middleware))))
...
(defn start-app
  "e.g. lein run 3000"
  [[port]]
  (let [port (http-port port)]
    (.addShutdownHook (Runtime/getRuntime) (Thread. stop-app))
    (when-let [repl-port (env :nrepl-port)]
      (repl/start (parse-port repl-port) :handler (cider&cljr-nrepl-handler)))
    (http/start {:handler app
                 :init    init
                 :port    port})))

[yogthos]

thanks, looks great

[yogthos]

I just pushed out the new template, I ended up changing the params to be a map to keep it consistent with the HTTP server adapters:

(repl/start {:port (parse-port repl-port)
             :handler (cider&cljr-nrepl-handler)}))