use correct string concatenation method

.#README.md

@@ -1 +0,0 @@
-ink@Magellan.6427:1563239860

src/whisper/core.clj

@@ -6,10 +6,10 @@
 (defn main-loop
   "updates UI with data from Signald"
   [content]
-  (update mainWindow content)
-  (recur (get-next-update)))
+  (update-window mainWindow content)
+  (recur (str (get-next-update))))
 
 (defn -main
   "packs and shows main window with signald version string"
   [& args]
-  ())
+  (main-loop "whisper is online"))

src/whisper/signald.clj

@@ -15,5 +15,5 @@
 (defn get-next-update
   "Retrieves and parses next line of incoming data from signald"
   []
-  (:data (json/read-str (.sigdRead readLine) :key-fn keyword)))
+  (map :data (json/read-str (. sigdRead readLine) :key-fn keyword)))
 

src/whisper/ui.clj

@@ -10,9 +10,9 @@
                        :height 40))
 
 ;; UI Functions
-(defn update
+(defn update-window
   "Updates WINDOW to display additional content: CONTENT"
   [window content]
   (config! window :content
-           (concat (:content window) content))
+           (str (:content window) content "\n"))
   window)