Added ,ws to strip trailing whitespace in a file

vim/plugin/settings/whitespace-killer.vim

@@ -0,0 +1,15 @@
+" via: http://rails-bestpractices.com/posts/60-remove-trailing-whitespace
+" Strip trailing whitespace
+function! <SID>StripTrailingWhitespaces()
+    " Preparation: save last search, and cursor position.
+    let _s=@/
+    let l = line(".")
+    let c = col(".")
+    " Do the business:
+    %s/\s\+$//e
+    " Clean up: restore previous search history, and cursor position
+    let @/=_s
+    call cursor(l, c)
+endfunction
+command! StripTrailingWhitespaces call <SID>StripTrailingWhitespaces()
+nmap ,ws :StripTrailingWhitespaces<CR>