README.md in nronn-0.10.1.pre3 vs README.md in nronn-0.10.1.pre4

@@ -1,7 +1,9 @@
 # nRonn
 
+[![Ruby](https://github.com/n-ronn/nronn/actions/workflows/build.yml/badge.svg)](https://github.com/n-ronn/nronn/actions/workflows/build.yml?query=branch%3Amain)
+
 nRonn is a new, currently-maintained fork of the defunct [original Ronn
 project](https://github.com/rtomayko/ronn).
 
 Ronn builds manuals. It converts simple, human readable textfiles to roff for
 terminal display, and also to HTML for the web.
@@ -12,19 +14,19 @@
 detail.
 
 The `*.ronn` files found in the [`man/`][1] directory show off a wide range of
 ronn capabilities:
 
-* [ronn(1)](http://rtomayko.github.com/ronn/ronn.1) command -
-  [source file](https://github.com/n-ronn/nronn/blob/master/man/ronn.1.ronn),
-  [roff output](https://github.com/n-ronn/nronn/blob/master/man/ronn.1)
+* [ronn(1)](https://n-ronn.github.io/nronn/ronn.1.html) command -
+  [source file](https://github.com/n-ronn/nronn/blob/main/man/ronn.1.ronn),
+  [roff output](https://github.com/n-ronn/nronn/blob/main/man/ronn.1)
 
-* [ronn-format(7)](http://rtomayko.github.com/ronn/ronn-format.7) -
-  [source file](https://github.com/n-ronn/nronn/blob/master/man/ronn-format.7.ronn),
-  [roff output](https://github.com/n-ronn/nronn/blob/master/man/ronn-format.7)
+* [ronn-format(7)](https://n-ronn.github.io/nronn/ronn-format.7.html) -
+  [source file](https://github.com/n-ronn/nronn/blob/main/man/ronn-format.7.ronn),
+  [roff output](https://github.com/n-ronn/nronn/blob/main/man/ronn-format.7)
 
-[1]: https://github.com/n-ronn/nronn/tree/master/man
+[1]: https://github.com/n-ronn/nronn/tree/main/man
 
 As an alternative, you might want to check out [pandoc](http://johnmacfarlane.net/pandoc/) which can also convert markdown into roff manual pages.
 
 ## Installation
 
@@ -69,11 +71,11 @@
 
 ```bash
 $ man man/ronn.5
 ```
 
-The [ronn(1)](http://rtomayko.github.com/ronn/ronn.1) manual page includes
+The [ronn(1)](https://n-ronn.github.io/nronn/ronn.1.html) manual page includes
 comprehensive documentation on `ronn` command line options.
 
 ## Background
 
 Some think Unix manual pages are a poor and outdated form of documentation. nRonn
@@ -124,8 +126,10 @@
 
 MIT License.
 
 See [LICENSE.txt](LICENSE.txt) for detail.
 
-## Build Status
+## JRuby support
 
-TODO
+JRuby is not supported yet:
+
+[![JRuby](https://github.com/n-ronn/nronn/actions/workflows/jruby.yml/badge.svg)](https://github.com/n-ronn/nronn/actions/workflows/jruby.yml)