Added \TaskCompletion command

I didn't see any way to draw tees for task completion, so I added a
command for that.

README.md

@@ -4,8 +4,9 @@
 
 Author: Giuseppe Lipari (g.lipari@sssup.it)
 	Antoine Bertout (bertout.antoine@gmail.com)
-Version: 2.0
-Date:    2015/05/01
+	Clayton G. Hobbs (clay@lakeserv.net)
+Version: 2.1 (WIP)
+Date:    2018/09/12
 
 This package contains the rtsched package for drawing GANTT charts
 (chronograms). The package can be useful for drawing real-time timing

rtsched.sty

@@ -1,6 +1,7 @@
   %% rtsched.sty
   %% Copyright 2005 Giuseppe Lipari
   %% Copyright 2015 Antoine Bertout <bertout.antoine@gmail.com> Transition from PSTricks to TikZ/PGF.
+  %% Copyright 2018 Clayton G. Hobbs <clay@lakeserv.net>
   % This work may be distributed and/or modified under the
   % conditions of the LaTeX Project Public License, either version 1.3
   % of this license or (at your option) any later version.
@@ -22,7 +23,8 @@
 \typeout{Easily draw real-time schedules in TeX/Latex.}
 \typeout{(c) 2005, Giuseppe Lipari, Pisa, Italy (g.lipari@sssup.it)}
 \typeout{(c) 2015, Antoine Bertout (bertout.antoine@gmail.com)}
-\typeout{Version 2.0}
+\typeout{(c) 2018, Clayton G. Hobbs (clay@lakeserv.net)}
+\typeout{Version 2.1 (WIP)}
 
 \RequirePackage{tikz}
 \usetikzlibrary{shadows, patterns}
@@ -67,6 +69,7 @@ Please update pgf to version 2.10 minimum!\MessageBreak
 \def\RTDefLineStyle{solid}
 \def\RTDefExecHeight{1}
 \def\RTArrowStyle{stealth}
+\def\RTTeeStyle{|}
 %arrow style for deadlines, arrivals and horizontal axes
 % -{Triangle 45}[length=x] with length is a more modern arrow style but requires arrows.meta tikz library (available on latest texlive but rarely up to date on linux distribution)
 %-stealth is a predefined more classical arrow style
@@ -358,6 +361,22 @@ Please update pgf to version 2.10 minimum!\MessageBreak
  }
 }
 
+%
+% TaskCompletion
+% Task completion: draws a tee at the specified slot
+% par 1  : task number from 1 to n
+% par 2  : slot number from 0 to l-1
+\newcommand{\TaskCompletion}[3][nocommand=1]{
+  \setkeys{RT}{#1}%
+  \@compute@yy{#2}
+  \@compute@xx{#3}
+  \yyy = \yy \advance \yyy by 2\sy
+  \begin{pgfonlayer}{foreground}
+  \draw [\RTLineStyle, \RTLineColor, thick, -\RTTeeStyle] (\xx,\yy) -- (\xx,\yyy);
+  \end{pgfonlayer}
+  \@RTExecDefaultValues
+}
+
 %
 % TaskDeadline
 % Task deadline: draws a down arrow at the specified slot