adding new stuff

plugins/bundle/vim-airline/autoload/airline/extensions/windowswap.vim

@@ -0,0 +1,29 @@
+" vim: et ts=2 sts=2 sw=2
+
+scriptencoding utf-8
+
+if !exists('g:loaded_windowswap')
+  finish
+endif
+
+let s:spc = g:airline_symbols.space
+
+if !exists('g:airline#extensions#windowswap#indicator_text')
+  let g:airline#extensions#windowswap#indicator_text = 'WS'
+endif
+
+function! airline#extensions#windowswap#init(ext)
+  call airline#parts#define_function('windowswap', 'airline#extensions#windowswap#get_status')
+endfunction
+
+function! airline#extensions#windowswap#get_status()
+  " use new tab-aware api if WS is up to date
+  let s:mark = exists('*WindowSwap#IsCurrentWindowMarked') ?
+    \WindowSwap#IsCurrentWindowMarked() :
+    \(WindowSwap#HasMarkedWindow() && WindowSwap#GetMarkedWindowNum() == winnr())
+  if s:mark
+    return g:airline#extensions#windowswap#indicator_text.s:spc
+  endif
+  return ''
+endfunction
+