Use socketio for syncing task changes across clients

package.json

@@ -5,6 +5,7 @@
     "dependencies": {
         "express": "~3.1.0",
         "path": "~0.4.9",
-        "mysql": "~2.0.0"
+        "mysql": "~2.0.0",
+        "socket.io": "*"
     }
-}
+}