updated readme and screenshot

README.md

@@ -1,11 +1,11 @@
 # omega-for-mumble
 
-**omega-for-mumble** is a simple & beautified skin / theme designed for the open-source and high quality voice-chat software **[mumble](http://wiki.mumble.info/wiki/Main_Page)**. The project is open – anyone can help to improve it.
+**omega-for-mumble** is a simple & beautified skin / theme designed for the open-source and high quality voice-chat software **[mumble](http://wiki.mumble.info/wiki/Main_Page)**.
 
 by <b>Vrifox</b> <br>
 
 ## preview
-![v0.2](https://git.vrifox.cc/vrifox/omega-for-mumble/raw/branch/master/project-omega_v0.2.png)
+![version 2015-0515](https://git.vrifox.cc/vrifox/omega-for-mumble/raw/branch/master/2015-0515.png)
 
 ## installation
 × [install-guide](http://wiki.mumble.info/wiki/Skins#Installing_a_Skin) — english / mumble