improve tools as requirements of final judging rounds

We moved the building of an initial entry `README.md` file functionality
form `bin/cvt-submission.sh` to a new `bin/gen-readme.sh` tool.

Add `bin/gen-readme.sh` VERSION "2.0.0 2025-06-16".

Update `bin/cvt-submission.sh` to ignore while running `chkentry(1)`,
any submission top level `REDAME.md` file.

Removed unused template file `template/entry/README_md`.

Changed `bin/cvt-submission.sh` allowed  minimum `chkentry(1)` VERSION from "1.1.5"
to "2.0.5".

Changed `bin/cvt-submission.sh` VERSION from "2.0.5 2025-05-18"
to "2.1.0 2025-06-16".

Update sitemap.

Tested the above via `make gen_top_html timestamp` on macOS.

template/entry/README.md.head

@@ -1,3 +1,6 @@
+Award: XXX - suggest award title - XXX
+
+XXX - once the .entry.json file is built by cvt-submission.sh - remove all text from top thru this line - XXX
 ## To build:
 
 ``` <!---sh-->
@@ -5,20 +8,33 @@
 ```
 
 
+### Bugs and (Mis)features:
+
+XXX - remove this section if not needed - XXX
+
+
 ## To use:
 
 ``` <!---sh-->
-    ./prog
+    ./prog XXX - add or remove args for a default or represenative run - XXX
+```
+
+
+## Try:
+
+``` <!---sh-->
+    ./try.sh
 ```
 
 
 ## Alternate code:
 
-XXX
+XXX - remove this section if not needed - XXX
 
 
 ### Alternate build:
 
+XXX - remove this section if not needed - XXX
 ``` <!---sh-->
     make alt
 ```
@@ -26,6 +42,7 @@ XXX
 
 ### Alternate use:
 
+XXX - remove this section if not needed - XXX
 ``` <!---sh-->
     ./prog.alt
 ```
@@ -33,8 +50,11 @@ XXX
 
 ## Judges' remarks:
 
-XXX
+XXX - write stuff here - XXX
+
+Please see [IOCCC markdown guidelines](https://www.ioccc.org/markdown.html) - XXX - remove this line - XXX
 
 
 ## Author's remarks:
 
+

template/entry/README.md.tail

@@ -2,7 +2,7 @@
 
 <!--
 
-    Copyright © 1984-XXX-YEAR-XXX by Landon Curt Noll. All Rights Reserved.
+    Copyright © 1984-XXX-YEAR-XXX by Landon Curt Noll and Leonid A. Broukhis.  All Rights Reserved.
 
     You are free to share and adapt this file under the terms of this license:
 

template/entry/README_md

@@ -1,58 +0,0 @@
-## To build:
-
-``` <!---sh-->
-    make all
-```
-
-
-## To use:
-
-``` <!---sh-->
-    ./XXX
-```
-
-
-## Alternate code:
-
-XXX
-
-
-### Alternate build:
-
-``` <!---sh-->
-    make alt
-```
-
-
-### Alternate use:
-
-NOTE: this version might not work on some systems like macOS.
-
-``` <!---sh-->
-    ./XXX.alt
-```
-
-
-## Judges' remarks:
-
-XXX
-
-
-## Author's remarks:
-
-XXX-remarks.md-XXX
-
-
-<!--
-
-    Copyright © 1984-XXX-YEAR-XXX by Landon Curt Noll. All Rights Reserved.
-
-    You are free to share and adapt this file under the terms of this license:
-
-        Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
-
-    For more information, see:
-
-        https://creativecommons.org/licenses/by-sa/4.0/
-
--->