Minor grammar, markdown, and badges

Signed-off-by: Joachim Wiberg <[email protected]>

README.md

@@ -1,10 +1,11 @@
 Archiver for .zoo files
 =======================
+[![License Badge][]][License] [![GitHub Status][]][GitHub]
 
-zoo is a fully-free software ([public domain][pd]) file archiving tool
-for maintaining collections of files.  It uses [Lempel-Ziv-Welch][LZW]
-compression to provide space savings in the range of 20% to 80%,
-depending on the files.
+zoo is a ([public domain][pd]) file archiving tool for maintaining
+collections of files.  It uses [Lempel-Ziv-Welch][LZW] compression to
+provide space savings in the range of 20% to 80%, depending on the
+files.
 
 Unlike other archiving tools, zoo can store and selectively extract
 multiple generations of the same file.  If files are added to an archive
@@ -14,8 +15,8 @@ versioning in VMS) as the new file is added.  This allows files that are
 frequently modified to be backed up in such a way as to allow access to
 previous versions (up to the version limit chosen) from one archive.
 
-This project exists as a service to all computer archaeologists and acts
-as a focal point for patches and maintenance for the long haul.
+> This project exists as a service to all computer archaeologists and
+> acts as a focal point for patches and maintenance for the long haul.
 
 
 Examples
@@ -36,7 +37,11 @@ newsgroup comp.sources.misc.  This version is based on v2.10 from
 
 zoo was placed in the [public domain][pd] in 2004.
 
-[pd]:      doc/public-domain.eml
-[LZW]:     https://en.wikipedia.org/wiki/Lempel%E2%80%93Ziv%E2%80%93Welch
-[Ibiblio]: http://www.ibiblio.org/pub/packages/ccic/software/unix/utils/
-[patches]: https://sources.debian.org/patches/zoo/2.10-28/
+[pd]:            doc/public-domain.eml
+[LZW]:           https://en.wikipedia.org/wiki/Lempel%E2%80%93Ziv%E2%80%93Welch
+[Ibiblio]:       http://www.ibiblio.org/pub/packages/ccic/software/unix/utils/
+[patches]:       https://sources.debian.org/patches/zoo/2.10-28/
+[License]:       https://unlicense.org/
+[License Badge]: https://img.shields.io/badge/License-Unlicense-blue.svg
+[GitHub]:        https://github.com/troglobit/zoo/actions/workflows/build.yml/
+[GitHub Status]: https://github.com/troglobit/zoo/actions/workflows/build.yml/badge.svg