[chore] change project paths

src/backend/core.clj

@@ -1 +0,0 @@
-(ns backend.core)

src/main/backend/core.clj

@@ -0,0 +1,12 @@
+(ns backend.core
+  (:use ring.adapter.jetty))
+
+(defn handler [request]
+  {:status 200
+   :headers {"Content-Type" "text/plain"}
+   :body "Hello World"})
+
+(defn -main
+  [& args]
+  (run-jetty handler {:port 3000
+                      :join? false}))