fix Makefile and README.md for 2004/hoyle

2004/hoyle/Makefile

@@ -101,7 +101,7 @@ CINCLUDE=
 #CINCLUDE= -include stdlib.h
 #CINCLUDE= -include stdio.h
 #CINCLUDE= -include stdlib.h -include stdio.h
-#CINCLUDE= -I ${X11_INCDIR}
+#CINCLUDE= -I ${X11_INCDIR} -I ${X11_INCDIR}/X11
 #CINCLUDE= `${SDL2_CONFIG} --cflags`
 
 # Optimization

2004/hoyle/README.md

@@ -7,19 +7,25 @@
 
     http://www.jonhoyle.com
 
-## To build:
+# To build:
 
-        make all
+```sh
+make
+```
 
-### To run
+### To run:
 
+```sh
 ./hoyle point ...
+```
 
 ### Try:
 
+```sh
 ./hoyle 10 0.5
 ./hoyle 1 1 1 1
 ./hoyle 2 0 1 0 -0.001
+```
 
 ### Alternate code
 
@@ -28,9 +34,11 @@ missing newline and used a non-standard tab stop size.
 
 To compile this alternate version:
 
+```sh
 make alt
+```
 
-Use `hoyle.alt.c` as you would `prog` above.
+Use `hoyle.alt.c` as you would `hoyle` above.
 
 ## Judges' comments
 
@@ -47,19 +55,23 @@ Use `hoyle.alt.c` as you would `prog` above.
 It allows up to 8 parameters (thus up to x^7).
 
 Points of note:
+
 - the x axis goes from -32 to +31
 - the y axis auto scales!
 - up to 8 coefficients may be passed in
 - the graph will determine direction and use slashes and
   dashes rather than simple block X's.
 
-     Example:
+For example, ta graph y = x^2:
-       To graph y = x^2
 
+```sh
 ./hoyle 0 0 1
+```
 
 Note that:
 
+```sh
 ./hoyle 0 0 2
+```
 
 will produce the same graph, since the y-axis is auto scaling.