[vim] Add a JavaScript plugin and a plist autocmd

vimrc

@@ -23,6 +23,7 @@ Plugin 'gmarik/Vundle.vim'
 " Filetypes
 Plugin 'keith/swift.vim'
 Plugin 'othree/html5.vim'
+Plugin 'pangloss/vim-javascript'
 
 " Editing helpers
 Plugin 'tpope/vim-repeat'
@@ -393,6 +394,11 @@ if has('autocmd')
         autocmd!
         autocmd BufRead *.pbxproj setf xcodepbx
     augroup END
+
+    augroup PListFileType
+        autocmd!
+        autocmd BufRead *.plist setf xml.plist
+    augroup END
 endif
 " }}}