Update style.css

Author: yuhsiang237

style.css

@@ -4,7 +4,7 @@ Theme URI: https://github.com/unromanticman
 Description: A Stable Theme.
 Author: UM
 Author URI: https://github.com/unromanticman
-Version: 1.0
+Version: 2.0
 Tags: sample white unromanticman umworksite
 License: GNU General Public License v2 or later
 License URI: http://www.gnu.org/licenses/gpl-2.0.html