Added shortcut to mark all tasks as done

ftplugin/todo.vim

@@ -31,6 +31,10 @@ function! TodoTxtMarkAsDone()
     call TodoTxtPrependDate()
     normal! Ix 
 endfunction
+
+function! TodoTxtMarkAllAsDone()
+    :g!/^x /TodoTxtMarkAsDone()
+endfunction
 
 " Mappings {{{1
 " Sort tasks {{{2
@@ -59,6 +63,11 @@ if !hasmapto("<leader>D",'v')
 if !hasmapto("<leader>D",'v')
     vnoremap <script> <silent> <buffer> <leader>D :call TodoTxtMarkAsDone()<CR>
 endif
+
+" Mark all done {{{2
+if !hasmapto("DD",'n')
+    nnoremap <script> <silent> <buffer> DD :call TodoTxtMarkAllAsDone()<CR>
+endif
 
 " Folding {{{1
 " Options {{{2