show gundo preview window at the bottom

Too squish on the side.

vim/vimrc

@@ -224,7 +224,7 @@ nnoremap <silent> <expr> $ ScreenMovement("$")
 "" Plugin options
 """"""""""""""""""""""""""""""""""""""""""""""""""""""""
 
- let g:NERDTreeQuitOnOpen = 1
+let g:NERDTreeQuitOnOpen = 1
 
 " Having problems showing NERDTree arrows in OS X
 if s:uname == "Darwin"
@@ -233,6 +233,8 @@ endif
 
 " let g:SuperTabDefaultCompletionType = 'context'
 
+let g:gundo_preview_bottom = 1
+
 
 """"""""
 "" Functions, the Givers of Power (in order of use)