update vimrc mini for installation

Author: jwu

.vimrc.mini

@@ -51,7 +51,7 @@ Plugin 'mattn/emmet-vim'
 Plugin 'nathanaelkane/vim-indent-guides'
 Plugin 'pangloss/vim-javascript'
 Plugin 'kchmck/vim-coffee-script'
-Plugin 'leafgarland/typescript-vim'
+Plugin 'exvim/ex-typescript'
 " Plugin 'skammer/vim-css-color'
 Plugin 'groenewege/vim-less'
 Plugin 'plasticboy/vim-markdown'