Added disconnect

core.lua

@@ -103,4 +103,16 @@ function Core:download(file)
     fileStream:close();
 
     return true, "Success"
+end
+
+function Core:disconnect()
+    if not self then
+        return "Not instance"
+    end
+
+    if not self.ws then
+        return "Not initilized"
+    end
+
+    self.ws.close();
 end