Incorporated due date workaround from durcheinandr

README.markdown

@@ -18,6 +18,10 @@ function for context and projects (see section 1.4).
 
     git clone https://github.com/dbeniamine/todo.txt-vim.git ~/.vim/bundle/todo.txt-vim
 
+If you want the help installed, run ":helptags ~/.vim/doc" inside vim after having copied the files.
+Then you will be able to get the commands help with: :h todo.txt
+
+
 ## Features included in Freitass version
 
 This plugin gives syntax highlighting to [todo.txt](http://todotxt.com/) files. It also defines a few mappings, to help with editing these files:
@@ -28,6 +32,8 @@ This plugin gives syntax highlighting to [todo.txt](http://todotxt.com/) files.
 
 `<LocalLeader>s@` : Sort the file on @Contexts
 
+`<leader>-sd` : Sort @_sched entries by due-date
+
 `<LocalLeader>j` : Lower the priority of the current line
 
 `<LocalLeader>k` : Increase the priority of the current line
@@ -48,9 +54,6 @@ This plugin gives syntax highlighting to [todo.txt](http://todotxt.com/) files.
 
 `<leader>-D` : Move completed tasks to done.txt
 
-If you want the help installed, run ":helptags ~/.vim/doc" inside vim after having copied the files.
-Then you will be able to get the commands help with: :h todo.txt
-
 ## New features
 
 This fork provides a hierarchical sorting function designed to do by project