Add 2000/dhyang/try.sh, make void main int main

The try.sh script is as usual: replaces what the judges recommended one
try.

It was suggested to me a while back that when I encounter a void main
that I change it to int to be more portable so I have done that.

README.md file typo/format checked.

This should complete the review of 2000/dhyang.

2000/dhyang/README.md

@@ -15,20 +15,7 @@ make
 ### Try:
 
 ```sh
-make saitou
-./saitou > aku.c
-cat aku.c
-
-make soku
-./soku > soku.c
-cat soku.c
-
-make zan
-./zan > zan.c
-cat zan.c
-
-make aku
-./aku | diff - aku.c
+./try.sh
 ```
 
 
@@ -53,9 +40,9 @@ them with cool layout!
 For your enjoyment:
 
 1. Compile [dhyang.c](dhyang.c).
-2. Run `./dhyang` and pipe output to another .c file
-3. Compile that file
-4. Repeat steps 2 and 3 until eventually the output cycles
+2. Run `./dhyang` and pipe output to another `.c` file.
+3. Compile that file.
+4. Repeat steps 2 and 3 until eventually the output cycles.
 
 To interpret the output: the [dhyang.c](dhyang.c.c) is an image of Saitou
 Hajime, which eventually generates three sources files that are images of "aku