Move vim settings out of plugins to ensure they all get correctly loaded after everything else [Fix #373]

vim/settings/yadr-window-killer.vim

@@ -0,0 +1,20 @@
+" Use Q to intelligently close a window 
+" (if there are multiple windows into the same buffer)
+" or kill the buffer entirely if it's the last window looking into that buffer
+function! CloseWindowOrKillBuffer()
+  let number_of_windows_to_this_buffer = len(filter(range(1, winnr('$')), "winbufnr(v:val) == bufnr('%')"))
+
+  " We should never bdelete a nerd tree
+  if matchstr(expand("%"), 'NERD') == 'NERD'
+    wincmd c
+    return
+  endif
+
+  if number_of_windows_to_this_buffer > 1
+    wincmd c
+  else
+    bdelete
+  endif
+endfunction
+
+nnoremap <silent> Q :call CloseWindowOrKillBuffer()<CR>