replace trailing whitespace with blackslash in README.md

As an alternative to the markdown trailing whitespace as a line
break, we use a trailing blackslash as a markdown line break.

1991/ant/README.md

@@ -1,9 +1,9 @@
 # Best Utility
 
-Anthony C Howe  
-Mortice Kern Systems Inc.	#CL-23  
-35 King St. N			268 Phillip St.  
-Waterloo, On			Waterloo, On		 
+Anthony C Howe\
+Mortice Kern Systems Inc.	#CL-23\
+35 King St. N			268 Phillip St.\
+Waterloo, On			Waterloo, On\
 Canada, N2J 2W9			Canada, N2L 6G9
 
 ## To build:
@@ -65,7 +65,7 @@ results depending on the implementation of `curses`.
 -    W		    write buffer to file
 -    R		    refresh the screen
 -    Q		    quit
-    
+\
 ### Exit status
 
 -    0		    success
@@ -88,10 +88,10 @@ to provide more portable code, since the compiler should handle the translation
 of them into the native character set.  Note that `'\f'` (form-feed) was used to
 exit insert mode because K&R C had no escape constant for the escape-key.
 
-My goals for this project were to learn and experiment with the 
-Buffer Gap Scheme [Fin80][net90], write a useful and *portable* 
-program, and meet the requirements of the IOCCC.  I initially 
-planned to have a mini `curses` built-in like the IOCCC Tetris entry 
+My goals for this project were to learn and experiment with the\
+Buffer Gap Scheme [Fin80][net90], write a useful and *portable*\
+program, and meet the requirements of the IOCCC.  I initially\
+planned to have a mini `curses` built-in like the IOCCC Tetris entry\
 from a previous year, however this was not as portable as using a
 `curses` library with `TERMINFO`/`TERMCAP` support.
 
@@ -104,18 +104,18 @@ screen with long lines.  Paging up and down should work correctly, however.
 
 ### References:
 
-[Fin80]	Craig A. Finseth, "Theory and Practice of Text Editors or 
-	A Cookbook For An EMACS", TM-165, MIT Lab. for Computer 
+[Fin80]	Craig A. Finseth, "Theory and Practice of Text Editors or\
+	A Cookbook For An EMACS", TM-165, MIT Lab. for Computer\
 	Science
 
-[KeP81]	Kernighan & Plauger, "Software Tools in Pascal", 
+[KeP81]	Kernighan & Plauger, "Software Tools in Pascal",\
 	Addison-Wesley, 81, chapter 6
 
 [Mil86]	Eugene W. Myers & Webb Miller, "Row-replacement Algorithms
-	for Screen Editors", TR 86-19, Dept. of Computer Science, 
+	for Screen Editors", TR 86-19, Dept. of Computer Science,\
 	U. of Arizona
 
-[MyM86]	Eugene W. Myers & Webb Miller, "A simple row-replacement 
+[MyM86]	Eugene W. Myers & Webb Miller, "A simple row-replacement\
 	method", TR 86-28, Dept. of Computer Science, U. of Arizona
 
 [Mil87]	Webb Miller, "A Software Tools Sampler", Prentice Hall, 87