Updated screenshots

README.md

@@ -4,4 +4,6 @@ It looks best using [justinmk's vim-syntax-extras](https://github.com/justinmk/v
 
 
 ###Preview
-![Preview](https://cloud.githubusercontent.com/assets/8389374/6772124/2926889e-d0c3-11e4-9761-ca682b3b5797.png)
+![Preview2](https://cloud.githubusercontent.com/assets/8389374/6789587/6482421e-d16f-11e4-9e15-48a7d0e99a84.png)
+![multi-window](https://cloud.githubusercontent.com/assets/8389374/6789767/e11604d6-d170-11e4-8472-1d9e32ae2caa.png)
+