fixing int and string concatenation

server/server.py

@@ -43,7 +43,7 @@ class TwitterApi():
         feed = self.api.search(tag, count=20)
         timestamp = int(time.time())
         for i in feed:
-            tweets = tweets + " 0x7F0x7F0x7F0x7F " + timestamp + " @" + i.user.screen_name + " " + i.text + "\n"
+            tweets = tweets + " 0x7F0x7F0x7F0x7F " + str(timestamp) + " @" + i.user.screen_name + " " + i.text + "\n"
         return tweets.encode('utf-8').strip()